79959973 has 2 divisors, whose sum is σ = 79959974. Its totient is φ = 79959972.

The previous prime is 79959941. The next prime is 79959977. The reversal of 79959973 is 37995997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66292164 + 13667809 = 8142^2 + 3697^2 .

It is a cyclic number.

It is not a de Polignac number, because 79959973 - 2⁵ = 79959941 is a prime.

It is a super-3 number, since 3×79959973³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79959977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39979986 + 39979987.

It is an arithmetic number, because the mean of its divisors is an integer number (39979987).

Almost surely, 2^79959973 is an apocalyptic number.

It is an amenable number.

79959973 is a deficient number, since it is larger than the sum of its proper divisors (1).

79959973 is an equidigital number, since it uses as much as digits as its factorization.

79959973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4822335, while the sum is 58.

The square root of 79959973 is about 8942.0340527198. The cubic root of 79959973 is about 430.8150630534.

The spelling of 79959973 in words is "seventy-nine million, nine hundred fifty-nine thousand, nine hundred seventy-three".