79072399 has 16 divisors (see below), whose sum is σ = 92835072. Its totient is φ = 65939328.

The previous prime is 79072397. The next prime is 79072403. The reversal of 79072399 is 99327097.

It is not a de Polignac number, because 79072399 - 2¹ = 79072397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79072397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133047 + ... + 133639.

It is an arithmetic number, because the mean of its divisors is an integer number (5802192).

Almost surely, 2^79072399 is an apocalyptic number.

79072399 is a deficient number, since it is larger than the sum of its proper divisors (13762673).

79072399 is a wasteful number, since it uses less digits than its factorization.

79072399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086.

The product of its (nonzero) digits is 214326, while the sum is 46.

The square root of 79072399 is about 8892.2662465763. The cubic root of 79072399 is about 429.2150797093.

The spelling of 79072399 in words is "seventy-nine million, seventy-two thousand, three hundred ninety-nine".