13939507 has 8 divisors (see below), whose sum is σ = 14829696. Its totient is φ = 13057152.

The previous prime is 13939493. The next prime is 13939511. The reversal of 13939507 is 70593931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13939507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13939547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1953 + ... + 5629.

It is an arithmetic number, because the mean of its divisors is an integer number (1853712).

Almost surely, 2^13939507 is an apocalyptic number.

13939507 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13939507 is a deficient number, since it is larger than the sum of its proper divisors (890189).

13939507 is a wasteful number, since it uses less digits than its factorization.

13939507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 13939507 is about 3733.5649184124. The cubic root of 13939507 is about 240.6665901462. Note that the first 3 decimals are identical.

The spelling of 13939507 in words is "thirteen million, nine hundred thirty-nine thousand, five hundred seven".