79432399 has 2 divisors, whose sum is σ = 79432400. Its totient is φ = 79432398.

The previous prime is 79432391. The next prime is 79432417. The reversal of 79432399 is 99323497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79432399 - 2³ = 79432391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79432391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39716199 + 39716200.

It is an arithmetic number, because the mean of its divisors is an integer number (39716200).

Almost surely, 2^79432399 is an apocalyptic number.

79432399 is a deficient number, since it is larger than the sum of its proper divisors (1).

79432399 is an equidigital number, since it uses as much as digits as its factorization.

79432399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 46.

The square root of 79432399 is about 8912.4855680108. The cubic root of 79432399 is about 429.8654690017.

The spelling of 79432399 in words is "seventy-nine million, four hundred thirty-two thousand, three hundred ninety-nine".