13897315 has 4 divisors (see below), whose sum is σ = 16676784. Its totient is φ = 11117848.

The previous prime is 13897309. The next prime is 13897321. The reversal of 13897315 is 51379831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51379831 = 17 ⋅3022343.

It is an interprime number because it is at equal distance from previous prime (13897309) and next prime (13897321).

It is a cyclic number.

It is not a de Polignac number, because 13897315 - 2³ = 13897307 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1389727 + ... + 1389736.

It is an arithmetic number, because the mean of its divisors is an integer number (4169196).

Almost surely, 2^13897315 is an apocalyptic number.

13897315 is a deficient number, since it is larger than the sum of its proper divisors (2779469).

13897315 is an equidigital number, since it uses as much as digits as its factorization.

13897315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2779468.

The product of its digits is 22680, while the sum is 37.

The square root of 13897315 is about 3727.9102725253. The cubic root of 13897315 is about 240.4235287781.

The spelling of 13897315 in words is "thirteen million, eight hundred ninety-seven thousand, three hundred fifteen".