89123790 has 64 divisors (see below), whose sum is σ = 245306880. Its totient is φ = 20300160.

The previous prime is 89123789. The next prime is 89123803. The reversal of 89123790 is 9732198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81145 + ... + 82235.

It is an arithmetic number, because the mean of its divisors is an integer number (3832920).

Almost surely, 2^89123790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89123790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122653440).

89123790 is an abundant number, since it is smaller than the sum of its proper divisors (156183090).

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

89123790 is a wasteful number, since it uses less digits than its factorization.

89123790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 89123790 is about 9440.5397091480. The cubic root of 89123790 is about 446.6814139583.

The spelling of 89123790 in words is "eighty-nine million, one hundred twenty-three thousand, seven hundred ninety".