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13950985 = 52790197
BaseRepresentation
bin110101001110…
…000000001001
3222020210011011
4311032000021
512032412420
61215003521
7226403266
oct65160011
928223134
1013950985
117969644
1248095a1
132b76029
141bd226d
15135895a
hexd4e009

13950985 has 4 divisors (see below), whose sum is σ = 16741188. Its totient is φ = 11160784.

The previous prime is 13950983. The next prime is 13950991. The reversal of 13950985 is 58905931.

13950985 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.

It can be written as a sum of positive squares in 2 ways, for example, as 10310521 + 3640464 = 3211^2 + 1908^2 .

It is a cyclic number.

It is not a de Polignac number, because 13950985 - 21 = 13950983 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13950983) 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, 1395094 + ... + 1395103.

It is an arithmetic number, because the mean of its divisors is an integer number (4185297).

Almost surely, 213950985 is an apocalyptic number.

It is an amenable number.

13950985 is a deficient number, since it is larger than the sum of its proper divisors (2790203).

13950985 is an equidigital number, since it uses as much as digits as its factorization.

13950985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790202.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 13950985 is about 3735.1017389089. The cubic root of 13950985 is about 240.7326281889.

The spelling of 13950985 in words is "thirteen million, nine hundred fifty thousand, nine hundred eighty-five".

Divisors: 1 5 2790197 13950985