79982993 has 2 divisors, whose sum is σ = 79982994. Its totient is φ = 79982992.

The previous prime is 79982971. The next prime is 79983019. The reversal of 79982993 is 39928997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57638464 + 22344529 = 7592^2 + 4727^2 .

It is an emirp because it is prime and its reverse (39928997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79982993 - 2²² = 75788689 is a prime.

It is not a weakly prime, because it can be changed into another prime (79982933) 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, 39991496 + 39991497.

It is an arithmetic number, because the mean of its divisors is an integer number (39991497).

Almost surely, 2^79982993 is an apocalyptic number.

It is an amenable number.

79982993 is a deficient number, since it is larger than the sum of its proper divisors (1).

79982993 is an equidigital number, since it uses as much as digits as its factorization.

79982993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 56.

The square root of 79982993 is about 8943.3211392636. The cubic root of 79982993 is about 430.8564021168.

The spelling of 79982993 in words is "seventy-nine million, nine hundred eighty-two thousand, nine hundred ninety-three".