79937953 has 2 divisors, whose sum is σ = 79937954. Its totient is φ = 79937952.

The previous prime is 79937947. The next prime is 79937969. The reversal of 79937953 is 35973997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78357904 + 1580049 = 8852^2 + 1257^2 .

It is an emirp because it is prime and its reverse (35973997) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79937953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79937953.

It is not a weakly prime, because it can be changed into another prime (79937653) 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, 39968976 + 39968977.

It is an arithmetic number, because the mean of its divisors is an integer number (39968977).

Almost surely, 2^79937953 is an apocalyptic number.

It is an amenable number.

79937953 is a deficient number, since it is larger than the sum of its proper divisors (1).

79937953 is an equidigital number, since it uses as much as digits as its factorization.

79937953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1607445, while the sum is 52.

The square root of 79937953 is about 8940.8027044556. The cubic root of 79937953 is about 430.7755123536.

The spelling of 79937953 in words is "seventy-nine million, nine hundred thirty-seven thousand, nine hundred fifty-three".