89198790 has 32 divisors (see below), whose sum is σ = 214331616. Its totient is φ = 23758080.

The previous prime is 89198783. The next prime is 89198797. The reversal of 89198790 is 9789198.

It is an interprime number because it is at equal distance from previous prime (89198783) and next prime (89198797).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89198797) 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, 40354 + ... + 42506.

It is an arithmetic number, because the mean of its divisors is an integer number (6697863).

Almost surely, 2^89198790 is an apocalyptic number.

89198790 is an abundant number, since it is smaller than the sum of its proper divisors (125132826).

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

89198790 is a wasteful number, since it uses less digits than its factorization.

89198790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3544.

The product of its (nonzero) digits is 326592, while the sum is 51.

The square root of 89198790 is about 9444.5111043399. The cubic root of 89198790 is about 446.8066768579.

It can be divided in two parts, 891 and 98790, that added together give a triangular number (99681 = T₄₄₆).

The spelling of 89198790 in words is "eighty-nine million, one hundred ninety-eight thousand, seven hundred ninety".