79788945 has 32 divisors (see below), whose sum is σ = 131414400. Its totient is φ = 41321984.

The previous prime is 79788931. The next prime is 79788949. The reversal of 79788945 is 54988797.

It is a cyclic number.

It is not a de Polignac number, because 79788945 - 2⁹ = 79788433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79788949) 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 31 ways as a sum of consecutive naturals, for example, 78259 + ... + 79271.

It is an arithmetic number, because the mean of its divisors is an integer number (4106700).

Almost surely, 2^79788945 is an apocalyptic number.

It is an amenable number.

79788945 is a deficient number, since it is larger than the sum of its proper divisors (51625455).

79788945 is a wasteful number, since it uses less digits than its factorization.

79788945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169.

The product of its digits is 5080320, while the sum is 57.

The square root of 79788945 is about 8932.4657849890. The cubic root of 79788945 is about 430.5076841184.

The spelling of 79788945 in words is "seventy-nine million, seven hundred eighty-eight thousand, nine hundred forty-five".