79670519 has 2 divisors, whose sum is σ = 79670520. Its totient is φ = 79670518.

The previous prime is 79670489. The next prime is 79670557. The reversal of 79670519 is 91507697.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79670519 is a prime.

It is a super-2 number, since 2×79670519² = 12694783195458722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 79670519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79670599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39835259 + 39835260.

It is an arithmetic number, because the mean of its divisors is an integer number (39835260).

Almost surely, 2^79670519 is an apocalyptic number.

79670519 is a deficient number, since it is larger than the sum of its proper divisors (1).

79670519 is an equidigital number, since it uses as much as digits as its factorization.

79670519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 79670519 is about 8925.8343587588. The cubic root of 79670519 is about 430.2945863112.

The spelling of 79670519 in words is "seventy-nine million, six hundred seventy thousand, five hundred nineteen".