89218900 has 18 divisors (see below), whose sum is σ = 193605230. Its totient is φ = 35687520.

The previous prime is 89218859. The next prime is 89218901. The reversal of 89218900 is 981298.

It can be written as a sum of positive squares in 3 ways, for example, as 3952144 + 85266756 = 1988^2 + 9234^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 89218900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89218901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 445995 + ... + 446194.

Almost surely, 2^89218900 is an apocalyptic number.

It is an amenable number.

89218900 is an abundant number, since it is smaller than the sum of its proper divisors (104386330).

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

89218900 is a wasteful number, since it uses less digits than its factorization.

89218900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892203 (or 892196 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 89218900 is about 9445.5756838850. The cubic root of 89218900 is about 446.8402520783.

The spelling of 89218900 in words is "eighty-nine million, two hundred eighteen thousand, nine hundred".