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12955769 = 13198899
BaseRepresentation
bin110001011011…
…000001111001
3220101012222022
4301123001321
511304041034
61141404225
7215056631
oct61330171
926335868
1012955769
117349952
124409675
1328b8048
141a136c1
15120db2e
hexc5b079

12955769 has 4 divisors (see below), whose sum is σ = 13054800. Its totient is φ = 12856740.

The previous prime is 12955759. The next prime is 12955783. The reversal of 12955769 is 96755921.

It is a happy number.

12955769 is digitally balanced in base 2, 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96755921 = 109887669.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12955769 is a prime.

It is a super-2 number, since 2×129557692 = 335703900762722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12955759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49319 + ... + 49580.

It is an arithmetic number, because the mean of its divisors is an integer number (3263700).

Almost surely, 212955769 is an apocalyptic number.

It is an amenable number.

12955769 is a deficient number, since it is larger than the sum of its proper divisors (99031).

12955769 is an equidigital number, since it uses as much as digits as its factorization.

12955769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99030.

The product of its digits is 170100, while the sum is 44.

The square root of 12955769 is about 3599.4123131422. The cubic root of 12955769 is about 234.8664942605.

The spelling of 12955769 in words is "twelve million, nine hundred fifty-five thousand, seven hundred sixty-nine".

Divisors: 1 131 98899 12955769