79930389 has 32 divisors (see below), whose sum is σ = 133539840. Its totient is φ = 41313600.

The previous prime is 79930363. The next prime is 79930393. The reversal of 79930389 is 98303997.

It is not a de Polignac number, because 79930389 - 2¹⁹ = 79406101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79930489) 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 31 ways as a sum of consecutive naturals, for example, 52144 + ... + 53654.

It is an arithmetic number, because the mean of its divisors is an integer number (4173120).

Almost surely, 2^79930389 is an apocalyptic number.

It is an amenable number.

79930389 is a deficient number, since it is larger than the sum of its proper divisors (53609451).

79930389 is a wasteful number, since it uses less digits than its factorization.

79930389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761.

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 79930389 is about 8940.3796899237. The cubic root of 79930389 is about 430.7619247788.

The spelling of 79930389 in words is "seventy-nine million, nine hundred thirty thousand, three hundred eighty-nine".