13979507 has 2 divisors, whose sum is σ = 13979508. Its totient is φ = 13979506.

The previous prime is 13979503. The next prime is 13979527. The reversal of 13979507 is 70597931.

It is a weak prime.

It is an emirp because it is prime and its reverse (70597931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13979507 - 2² = 13979503 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13979501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6989753 + 6989754.

It is an arithmetic number, because the mean of its divisors is an integer number (6989754).

Almost surely, 2^13979507 is an apocalyptic number.

13979507 is a deficient number, since it is larger than the sum of its proper divisors (1).

13979507 is an equidigital number, since it uses as much as digits as its factorization.

13979507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59535, while the sum is 41.

The square root of 13979507 is about 3738.9178915831. The cubic root of 13979507 is about 240.8965712643.

The spelling of 13979507 in words is "thirteen million, nine hundred seventy-nine thousand, five hundred seven".