13908513 has 8 divisors (see below), whose sum is σ = 19520800. Its totient is φ = 8784288.

The previous prime is 13908511. The next prime is 13908523. The reversal of 13908513 is 31580931.

It is a happy number.

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

It is not a de Polignac number, because 13908513 - 2¹ = 13908511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13908511) 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, 121948 + ... + 122061.

It is an arithmetic number, because the mean of its divisors is an integer number (2440100).

Almost surely, 2^13908513 is an apocalyptic number.

It is an amenable number.

13908513 is a deficient number, since it is larger than the sum of its proper divisors (5612287).

13908513 is a wasteful number, since it uses less digits than its factorization.

13908513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244031.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 13908513 is about 3729.4118839302. The cubic root of 13908513 is about 240.4880865695.

The spelling of 13908513 in words is "thirteen million, nine hundred eight thousand, five hundred thirteen".