89890790 has 32 divisors (see below), whose sum is σ = 180278784. Its totient is φ = 31990240.

The previous prime is 89890789. The next prime is 89890799. The reversal of 89890790 is 9709898.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89890799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3524 + ... + 13863.

It is an arithmetic number, because the mean of its divisors is an integer number (5633712).

Almost surely, 2^89890790 is an apocalyptic number.

89890790 is an abundant number, since it is smaller than the sum of its proper divisors (90387994).

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

89890790 is a wasteful number, since it uses less digits than its factorization.

89890790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17452.

The product of its (nonzero) digits is 326592, while the sum is 50.

The square root of 89890790 is about 9481.0753609493. The cubic root of 89890790 is about 447.9591367650.

The spelling of 89890790 in words is "eighty-nine million, eight hundred ninety thousand, seven hundred ninety".