13939506 has 32 divisors (see below), whose sum is σ = 35402880. Its totient is φ = 3982608.

The previous prime is 13939493. The next prime is 13939511. The reversal of 13939506 is 60593931.

13939506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18061 + ... + 18816.

It is an arithmetic number, because the mean of its divisors is an integer number (1106340).

Almost surely, 2^13939506 is an apocalyptic number.

13939506 is an abundant number, since it is smaller than the sum of its proper divisors (21463374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13939506 is a wasteful number, since it uses less digits than its factorization.

13939506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36895 (or 36889 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 13939506 is about 3733.5647844922. The cubic root of 13939506 is about 240.6665843912. Note that the first 3 decimals are identical.

The spelling of 13939506 in words is "thirteen million, nine hundred thirty-nine thousand, five hundred six".