91059888 has 40 divisors (see below), whose sum is σ = 249077808. Its totient is φ = 28567552.

The previous prime is 91059887. The next prime is 91059907. The reversal of 91059888 is 88895019.

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

It is not an unprimeable number, because it can be changed into a prime (91059887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54981 + ... + 56612.

Almost surely, 2^91059888 is an apocalyptic number.

It is an amenable number.

91059888 is an abundant number, since it is smaller than the sum of its proper divisors (158017920).

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

91059888 is a wasteful number, since it uses less digits than its factorization.

91059888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111621 (or 111615 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 48.

The square root of 91059888 is about 9542.5304820053. The cubic root of 91059888 is about 449.8927942149.

The spelling of 91059888 in words is "ninety-one million, fifty-nine thousand, eight hundred eighty-eight".