13915913 has 4 divisors (see below), whose sum is σ = 15181008. Its totient is φ = 12650820.

The previous prime is 13915907. The next prime is 13915919. The reversal of 13915913 is 31951931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (13915907) and next prime (13915919).

It is a cyclic number.

It is not a de Polignac number, because 13915913 - 2⁶ = 13915849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13915913.

It is not an unprimeable number, because it can be changed into a prime (13915919) by changing a digit.

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, 632531 + ... + 632552.

It is an arithmetic number, because the mean of its divisors is an integer number (3795252).

Almost surely, 2^13915913 is an apocalyptic number.

It is an amenable number.

13915913 is a deficient number, since it is larger than the sum of its proper divisors (1265095).

13915913 is a wasteful number, since it uses less digits than its factorization.

13915913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265094.

The product of its digits is 3645, while the sum is 32.

The square root of 13915913 is about 3730.4038655352. The cubic root of 13915913 is about 240.5307294295.

The spelling of 13915913 in words is "thirteen million, nine hundred fifteen thousand, nine hundred thirteen".