89861644900 has 18 divisors (see below), whose sum is σ = 194999769650. Its totient is φ = 35944657920.

The previous prime is 89861644871. The next prime is 89861644907. The reversal of 89861644900 is 944616898.

It can be written as a sum of positive squares in 3 ways, for example, as 17533997056 + 72327647844 = 132416^2 + 268938^2 .

It is not an unprimeable number, because it can be changed into a prime (89861644907) 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, 449308125 + ... + 449308324.

Almost surely, 2^89861644900 is an apocalyptic number.

It is an amenable number.

89861644900 is an abundant number, since it is smaller than the sum of its proper divisors (105138124750).

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

89861644900 is a wasteful number, since it uses less digits than its factorization.

89861644900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898616463 (or 898616456 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 89861644900 in words is "eighty-nine billion, eight hundred sixty-one million, six hundred forty-four thousand, nine hundred".