79790398 has 16 divisors (see below), whose sum is σ = 121183920. Its totient is φ = 39398400.

The previous prime is 79790393. The next prime is 79790419. The reversal of 79790398 is 89309797.

It is a super-2 number, since 2×79790398² = 12733015225996808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79790393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124158 + ... + 124798.

It is an arithmetic number, because the mean of its divisors is an integer number (7573995).

Almost surely, 2^79790398 is an apocalyptic number.

79790398 is a deficient number, since it is larger than the sum of its proper divisors (41393522).

79790398 is a wasteful number, since it uses less digits than its factorization.

79790398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 79790398 is about 8932.5471171441. The cubic root of 79790398 is about 430.5102973621.

The spelling of 79790398 in words is "seventy-nine million, seven hundred ninety thousand, three hundred ninety-eight".