79830790 has 32 divisors (see below), whose sum is σ = 158358816. Its totient is φ = 28788480.

The previous prime is 79830749. The next prime is 79830791. The reversal of 79830790 is 9703897.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79830791) 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 15 ways as a sum of consecutive naturals, for example, 1551 + ... + 12730.

It is an arithmetic number, because the mean of its divisors is an integer number (4948713).

Almost surely, 2^79830790 is an apocalyptic number.

79830790 is a deficient number, since it is larger than the sum of its proper divisors (78528026).

79830790 is a wasteful number, since it uses less digits than its factorization.

79830790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14344.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 79830790 is about 8934.8077763318. The cubic root of 79830790 is about 430.5829303225.

The spelling of 79830790 in words is "seventy-nine million, eight hundred thirty thousand, seven hundred ninety".