13387969 has 8 divisors (see below), whose sum is σ = 15714368. Its totient is φ = 11165040.

The previous prime is 13387967. The next prime is 13387987. The reversal of 13387969 is 96978331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13387969 - 2¹ = 13387967 is a prime.

It is a super-2 number, since 2×13387969² = 358475427889922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13387961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25587 + ... + 26104.

It is an arithmetic number, because the mean of its divisors is an integer number (1964296).

Almost surely, 2^13387969 is an apocalyptic number.

13387969 is the 2113-rd hex number.

It is an amenable number.

13387969 is a deficient number, since it is larger than the sum of its proper divisors (2326399).

13387969 is an equidigital number, since it uses as much as digits as its factorization.

13387969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51735.

The product of its digits is 244944, while the sum is 46.

The square root of 13387969 is about 3658.9573651520. The cubic root of 13387969 is about 237.4496676350.

The spelling of 13387969 in words is "thirteen million, three hundred eighty-seven thousand, nine hundred sixty-nine".