79528399 has 2 divisors, whose sum is σ = 79528400. Its totient is φ = 79528398.

The previous prime is 79528391. The next prime is 79528409. The reversal of 79528399 is 99382597.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79528399 - 2³ = 79528391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79528391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39764199 + 39764200.

It is an arithmetic number, because the mean of its divisors is an integer number (39764200).

Almost surely, 2^79528399 is an apocalyptic number.

79528399 is a deficient number, since it is larger than the sum of its proper divisors (1).

79528399 is an equidigital number, since it uses as much as digits as its factorization.

79528399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 52.

The square root of 79528399 is about 8917.8696447078. The cubic root of 79528399 is about 430.0385741490.

The spelling of 79528399 in words is "seventy-nine million, five hundred twenty-eight thousand, three hundred ninety-nine".