79985590 has 16 divisors (see below), whose sum is σ = 147323088. Its totient is φ = 31250016.

The previous prime is 79985539. The next prime is 79985597. The reversal of 79985590 is 9558997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79985597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92577 + ... + 93436.

It is an arithmetic number, because the mean of its divisors is an integer number (9207693).

Almost surely, 2^79985590 is an apocalyptic number.

79985590 is a deficient number, since it is larger than the sum of its proper divisors (67337498).

79985590 is a wasteful number, since it uses less digits than its factorization.

79985590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186063.

The product of its (nonzero) digits is 1020600, while the sum is 52.

The square root of 79985590 is about 8943.4663302324. The cubic root of 79985590 is about 430.8610652830.

The spelling of 79985590 in words is "seventy-nine million, nine hundred eighty-five thousand, five hundred ninety".