89990000920 has 64 divisors (see below), whose sum is σ = 209513304000. Its totient is φ = 34745829888.

The previous prime is 89990000873. The next prime is 89990000923. The reversal of 89990000920 is 2900009998.

It is a happy number.

89990000920 is a nontrivial binomial coefficient, being equal to C(424241, 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89990000923) 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, 6144166 + ... + 6158794.

It is an arithmetic number, because the mean of its divisors is an integer number (3273645375).

Almost surely, 2^89990000920 is an apocalyptic number.

89990000920 is the 424240-th triangular number.

89990000920 is the 141414-th centered nonagonal number.

It is an amenable number.

89990000920 is an abundant number, since it is smaller than the sum of its proper divisors (119523303080).

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

89990000920 is a wasteful number, since it uses less digits than its factorization.

89990000920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19972 (or 19968 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 46.

The spelling of 89990000920 in words is "eighty-nine billion, nine hundred ninety million, nine hundred twenty", and thus it is an aban number.