13909315 has 32 divisors (see below), whose sum is σ = 20490624. Its totient is φ = 8847360.

The previous prime is 13909303. The next prime is 13909327. The reversal of 13909315 is 51390931.

13909315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13909303) and next prime (13909327).

It is not a de Polignac number, because 13909315 - 2⁹ = 13908803 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57595 + ... + 57835.

It is an arithmetic number, because the mean of its divisors is an integer number (640332).

Almost surely, 2^13909315 is an apocalyptic number.

13909315 is a deficient number, since it is larger than the sum of its proper divisors (6581309).

13909315 is a wasteful number, since it uses less digits than its factorization.

13909315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367.

The product of its (nonzero) digits is 3645, while the sum is 31.

The square root of 13909315 is about 3729.5194060361. The cubic root of 13909315 is about 240.4927088642.

The spelling of 13909315 in words is "thirteen million, nine hundred nine thousand, three hundred fifteen".