79208990 has 40 divisors (see below), whose sum is σ = 166379400. Its totient is φ = 27149136.

The previous prime is 79208963. The next prime is 79208993. The reversal of 79208990 is 9980297.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79208993) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22361 + ... + 25659.

It is an arithmetic number, because the mean of its divisors is an integer number (4159485).

Almost surely, 2^79208990 is an apocalyptic number.

79208990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

79208990 is an abundant number, since it is smaller than the sum of its proper divisors (87170410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79208990 is an equidigital number, since it uses as much as digits as its factorization.

79208990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334 (or 3313 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 79208990 is about 8899.9432582461. The cubic root of 79208990 is about 429.4620820024.

The spelling of 79208990 in words is "seventy-nine million, two hundred eight thousand, nine hundred ninety".