13956769 has 4 divisors (see below), whose sum is σ = 14297220. Its totient is φ = 13616320.

The previous prime is 13956763. The next prime is 13956793. The reversal of 13956769 is 96765931.

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 5760000 + 8196769 = 2400^2 + 2863^2 .

It is a cyclic number.

It is not a de Polignac number, because 13956769 - 2⁵ = 13956737 is a prime.

It is a super-2 number, since 2×13956769² = 389582801838722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13956763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170164 + ... + 170245.

It is an arithmetic number, because the mean of its divisors is an integer number (3574305).

Almost surely, 2^13956769 is an apocalyptic number.

It is an amenable number.

13956769 is a deficient number, since it is larger than the sum of its proper divisors (340451).

13956769 is an equidigital number, since it uses as much as digits as its factorization.

13956769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340450.

The product of its digits is 306180, while the sum is 46.

The square root of 13956769 is about 3735.8759347709. The cubic root of 13956769 is about 240.7658923906.

The spelling of 13956769 in words is "thirteen million, nine hundred fifty-six thousand, seven hundred sixty-nine".