13397965 has 16 divisors (see below), whose sum is σ = 18448128. Its totient is φ = 9150336.

The previous prime is 13397963. The next prime is 13397977. The reversal of 13397965 is 56979331.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13397965 - 2¹ = 13397963 is a prime.

It is a super-2 number, since 2×13397965² = 359010932282450, 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 (13397963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10344 + ... + 11566.

It is an arithmetic number, because the mean of its divisors is an integer number (1153008).

Almost surely, 2^13397965 is an apocalyptic number.

It is an amenable number.

13397965 is a deficient number, since it is larger than the sum of its proper divisors (5050163).

13397965 is a wasteful number, since it uses less digits than its factorization.

13397965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548.

The product of its digits is 153090, while the sum is 43.

The square root of 13397965 is about 3660.3230731726. The cubic root of 13397965 is about 237.5087494468.

The spelling of 13397965 in words is "thirteen million, three hundred ninety-seven thousand, nine hundred sixty-five".