79316513 has 2 divisors, whose sum is σ = 79316514. Its totient is φ = 79316512.

The previous prime is 79316449. The next prime is 79316563. The reversal of 79316513 is 31561397.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46403344 + 32913169 = 6812^2 + 5737^2 .

It is a cyclic number.

It is not a de Polignac number, because 79316513 - 2⁶ = 79316449 is a prime.

It is a super-2 number, since 2×79316513² = 12582218468958338, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79316563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39658256 + 39658257.

It is an arithmetic number, because the mean of its divisors is an integer number (39658257).

Almost surely, 2^79316513 is an apocalyptic number.

It is an amenable number.

79316513 is a deficient number, since it is larger than the sum of its proper divisors (1).

79316513 is an equidigital number, since it uses as much as digits as its factorization.

79316513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 35.

The square root of 79316513 is about 8905.9818661392. The cubic root of 79316513 is about 429.6563199405.

The spelling of 79316513 in words is "seventy-nine million, three hundred sixteen thousand, five hundred thirteen".