79308973 has 2 divisors, whose sum is σ = 79308974. Its totient is φ = 79308972.

The previous prime is 79308953. The next prime is 79308979. The reversal of 79308973 is 37980397.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62678889 + 16630084 = 7917^2 + 4078^2 .

It is a cyclic number.

It is not a de Polignac number, because 79308973 - 2⁵ = 79308941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79308979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39654486 + 39654487.

It is an arithmetic number, because the mean of its divisors is an integer number (39654487).

Almost surely, 2^79308973 is an apocalyptic number.

It is an amenable number.

79308973 is a deficient number, since it is larger than the sum of its proper divisors (1).

79308973 is an equidigital number, since it uses as much as digits as its factorization.

79308973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 79308973 is about 8905.5585450886. The cubic root of 79308973 is about 429.6427048214.

The spelling of 79308973 in words is "seventy-nine million, three hundred eight thousand, nine hundred seventy-three".