89726403920 has 40 divisors (see below), whose sum is σ = 220885297704. Its totient is φ = 33779351552.

The previous prime is 89726403917. The next prime is 89726403967. The reversal of 89726403920 is 2930462798.

It can be written as a sum of positive squares in 4 ways, for example, as 812706064 + 88913697856 = 28508^2 + 298184^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32986289 + ... + 32989008.

Almost surely, 2^89726403920 is an apocalyptic number.

89726403920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89726403920 is an abundant number, since it is smaller than the sum of its proper divisors (131158893784).

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

89726403920 is a wasteful number, since it uses less digits than its factorization.

89726403920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65975327 (or 65975321 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 89726403920 in words is "eighty-nine billion, seven hundred twenty-six million, four hundred three thousand, nine hundred twenty".