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12944269 = 13995713
BaseRepresentation
bin110001011000…
…001110001101
3220100122012101
4301120032031
511303204034
61141235101
7215011252
oct61301615
926318171
1012944269
117341248
124402a91
1328b2a40
141a0d429
15120a514
hexc5838d

12944269 has 4 divisors (see below), whose sum is σ = 13939996. Its totient is φ = 11948544.

The previous prime is 12944257. The next prime is 12944291. The reversal of 12944269 is 96244921.

It is a happy number.

12944269 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96244921 = 254337847.

It can be written as a sum of positive squares in 2 ways, for example, as 1350244 + 11594025 = 1162^2 + 3405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12944269 is a prime.

It is a super-2 number, since 2×129442692 = 335108199888722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12944209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497844 + ... + 497869.

It is an arithmetic number, because the mean of its divisors is an integer number (3484999).

Almost surely, 212944269 is an apocalyptic number.

It is an amenable number.

12944269 is a deficient number, since it is larger than the sum of its proper divisors (995727).

12944269 is an equidigital number, since it uses as much as digits as its factorization.

12944269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995726.

The product of its digits is 31104, while the sum is 37.

The square root of 12944269 is about 3597.8144754837. The cubic root of 12944269 is about 234.7969817462.

The spelling of 12944269 in words is "twelve million, nine hundred forty-four thousand, two hundred sixty-nine".

Divisors: 1 13 995713 12944269