13990707 has 12 divisors (see below), whose sum is σ = 21272680. Its totient is φ = 8836128.

The previous prime is 13990687. The next prime is 13990721. The reversal of 13990707 is 70709931.

It is not a de Polignac number, because 13990707 - 2⁸ = 13990451 is a prime.

It is a super-3 number, since 3×13990707³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13990727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40738 + ... + 41079.

Almost surely, 2^13990707 is an apocalyptic number.

13990707 is a deficient number, since it is larger than the sum of its proper divisors (7281973).

13990707 is a wasteful number, since it uses less digits than its factorization.

13990707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81842 (or 81839 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 36.

The square root of 13990707 is about 3740.4153512678. The cubic root of 13990707 is about 240.9608873471.

The spelling of 13990707 in words is "thirteen million, nine hundred ninety thousand, seven hundred seven".