13408915 has 8 divisors (see below), whose sum is σ = 17328528. Its totient is φ = 9901920.

The previous prime is 13408909. The next prime is 13408939. The reversal of 13408915 is 51980431.

13408915 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13408915 - 2⁵ = 13408883 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103081 + ... + 103210.

It is an arithmetic number, because the mean of its divisors is an integer number (2166066).

Almost surely, 2^13408915 is an apocalyptic number.

13408915 is a deficient number, since it is larger than the sum of its proper divisors (3919613).

13408915 is a wasteful number, since it uses less digits than its factorization.

13408915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206309.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 13408915 is about 3661.8185372844. The cubic root of 13408915 is about 237.5734362012.

The spelling of 13408915 in words is "thirteen million, four hundred eight thousand, nine hundred fifteen".