13907917 has 4 divisors (see below), whose sum is σ = 13944060. Its totient is φ = 13871776.

The previous prime is 13907903. The next prime is 13907951. The reversal of 13907917 is 71970931.

13907917 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8404201 + 5503716 = 2899^2 + 2346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13907917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13907317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17488 + ... + 18265.

It is an arithmetic number, because the mean of its divisors is an integer number (3486015).

Almost surely, 2^13907917 is an apocalyptic number.

It is an amenable number.

13907917 is a deficient number, since it is larger than the sum of its proper divisors (36143).

13907917 is an equidigital number, since it uses as much as digits as its factorization.

13907917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36142.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 13907917 is about 3729.3319777140. The cubic root of 13907917 is about 240.4846514324.

The spelling of 13907917 in words is "thirteen million, nine hundred seven thousand, nine hundred seventeen".