89129856 has 32 divisors (see below), whose sum is σ = 236752200. Its totient is φ = 29709824.

The previous prime is 89129839. The next prime is 89129857. The reversal of 89129856 is 65892198.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89129857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115671 + ... + 116438.

Almost surely, 2^89129856 is an apocalyptic number.

It is an amenable number.

89129856 is an abundant number, since it is smaller than the sum of its proper divisors (147622344).

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

89129856 is a wasteful number, since it uses less digits than its factorization.

89129856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232126 (or 232114 counting only the distinct ones).

The product of its digits is 311040, while the sum is 48.

The square root of 89129856 is about 9440.8609776863. The cubic root of 89129856 is about 446.6915478331.

The spelling of 89129856 in words is "eighty-nine million, one hundred twenty-nine thousand, eight hundred fifty-six".