13939646 has 16 divisors (see below), whose sum is σ = 24668160. Its totient is φ = 5781240.

The previous prime is 13939637. The next prime is 13939661. The reversal of 13939646 is 64693931.

It is a congruent 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, 15626 + ... + 16493.

It is an arithmetic number, because the mean of its divisors is an integer number (1541760).

Almost surely, 2^13939646 is an apocalyptic number.

13939646 is a deficient number, since it is larger than the sum of its proper divisors (10728514).

13939646 is a wasteful number, since it uses less digits than its factorization.

13939646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32159.

The product of its digits is 104976, while the sum is 41.

The square root of 13939646 is about 3733.5835332827. The cubic root of 13939646 is about 240.6673900919.

The spelling of 13939646 in words is "thirteen million, nine hundred thirty-nine thousand, six hundred forty-six".