79520873 has 2 divisors, whose sum is σ = 79520874. Its totient is φ = 79520872.

The previous prime is 79520863. The next prime is 79520911. The reversal of 79520873 is 37802597.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47224384 + 32296489 = 6872^2 + 5683^2 .

It is a cyclic number.

It is not a de Polignac number, because 79520873 - 2¹⁴ = 79504489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79520873.

It is not a weakly prime, because it can be changed into another prime (79520863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39760436 + 39760437.

It is an arithmetic number, because the mean of its divisors is an integer number (39760437).

Almost surely, 2^79520873 is an apocalyptic number.

It is an amenable number.

79520873 is a deficient number, since it is larger than the sum of its proper divisors (1).

79520873 is an equidigital number, since it uses as much as digits as its factorization.

79520873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 79520873 is about 8917.4476729611. The cubic root of 79520873 is about 430.0250084608.

The spelling of 79520873 in words is "seventy-nine million, five hundred twenty thousand, eight hundred seventy-three".