79687339 has 2 divisors, whose sum is σ = 79687340. Its totient is φ = 79687338.

The previous prime is 79687337. The next prime is 79687367. The reversal of 79687339 is 93378697.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79687339 - 2¹ = 79687337 is a prime.

Together with 79687337, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (79687337) 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, 39843669 + 39843670.

It is an arithmetic number, because the mean of its divisors is an integer number (39843670).

Almost surely, 2^79687339 is an apocalyptic number.

79687339 is a deficient number, since it is larger than the sum of its proper divisors (1).

79687339 is an equidigital number, since it uses as much as digits as its factorization.

79687339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 52.

The square root of 79687339 is about 8926.7765178703. The cubic root of 79687339 is about 430.3248653729.

The spelling of 79687339 in words is "seventy-nine million, six hundred eighty-seven thousand, three hundred thirty-nine".