79523993 has 2 divisors, whose sum is σ = 79523994. Its totient is φ = 79523992.

The previous prime is 79523981. The next prime is 79524013. The reversal of 79523993 is 39932597.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69839449 + 9684544 = 8357^2 + 3112^2 .

It is a cyclic number.

It is not a de Polignac number, because 79523993 - 2¹⁸ = 79261849 is a prime.

It is not a weakly prime, because it can be changed into another prime (79523933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39761996 + 39761997.

It is an arithmetic number, because the mean of its divisors is an integer number (39761997).

Almost surely, 2^79523993 is an apocalyptic number.

It is an amenable number.

79523993 is a deficient number, since it is larger than the sum of its proper divisors (1).

79523993 is an equidigital number, since it uses as much as digits as its factorization.

79523993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 459270, while the sum is 47.

The square root of 79523993 is about 8917.6226091936. The cubic root of 79523993 is about 430.0306323950.

The spelling of 79523993 in words is "seventy-nine million, five hundred twenty-three thousand, nine hundred ninety-three".