79789394 has 16 divisors (see below), whose sum is σ = 122351040. Its totient is φ = 39015600.

The previous prime is 79789373. The next prime is 79789399. The reversal of 79789394 is 49398797.

It is not an unprimeable number, because it can be changed into a prime (79789399) 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 7 ways as a sum of consecutive naturals, for example, 14387 + ... + 19145.

It is an arithmetic number, because the mean of its divisors is an integer number (7646940).

Almost surely, 2^79789394 is an apocalyptic number.

79789394 is a deficient number, since it is larger than the sum of its proper divisors (42561646).

79789394 is a wasteful number, since it uses less digits than its factorization.

79789394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4945.

The product of its digits is 3429216, while the sum is 56.

The square root of 79789394 is about 8932.4909179915. The cubic root of 79789394 is about 430.5084916554.

The spelling of 79789394 in words is "seventy-nine million, seven hundred eighty-nine thousand, three hundred ninety-four".