79969994 has 32 divisors (see below), whose sum is σ = 135717120. Its totient is φ = 35082432.

The previous prime is 79969979. The next prime is 79969997. The reversal of 79969994 is 49996997.

It is not an unprimeable number, because it can be changed into a prime (79969997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49727 + ... + 51309.

It is an arithmetic number, because the mean of its divisors is an integer number (4241160).

Almost surely, 2^79969994 is an apocalyptic number.

79969994 is a deficient number, since it is larger than the sum of its proper divisors (55747126).

79969994 is a wasteful number, since it uses less digits than its factorization.

79969994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694.

The product of its digits is 9920232, while the sum is 62.

The square root of 79969994 is about 8942.5943662899. The cubic root of 79969994 is about 430.8330596302.

The spelling of 79969994 in words is "seventy-nine million, nine hundred sixty-nine thousand, nine hundred ninety-four".