13479913 has 2 divisors, whose sum is σ = 13479914. Its totient is φ = 13479912.

The previous prime is 13479889. The next prime is 13479943. The reversal of 13479913 is 31997431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12581209 + 898704 = 3547^2 + 948^2 .

It is an emirp because it is prime and its reverse (31997431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13479913 is a prime.

It is the 3672-nd Hogben number.

It is not a weakly prime, because it can be changed into another prime (13479943) by changing a digit.

It is a nontrivial repunit in base 3671.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6739956 + 6739957.

It is an arithmetic number, because the mean of its divisors is an integer number (6739957).

Almost surely, 2^13479913 is an apocalyptic number.

It is an amenable number.

13479913 is a deficient number, since it is larger than the sum of its proper divisors (1).

13479913 is an equidigital number, since it uses as much as digits as its factorization.

13479913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 37.

The square root of 13479913 is about 3671.5001021381. The cubic root of 13479913 is about 237.9920024147.

The spelling of 13479913 in words is "thirteen million, four hundred seventy-nine thousand, nine hundred thirteen".