89990775 has 72 divisors (see below), whose sum is σ = 195103584. Its totient is φ = 38707200.

The previous prime is 89990773. The next prime is 89990807. The reversal of 89990775 is 57709998.

It is not a de Polignac number, because 89990775 - 2¹ = 89990773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89990773) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 25095 + ... + 28455.

It is an arithmetic number, because the mean of its divisors is an integer number (2709772).

Almost surely, 2^89990775 is an apocalyptic number.

89990775 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

89990775 is an abundant number, since it is smaller than the sum of its proper divisors (105112809).

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

89990775 is a wasteful number, since it uses less digits than its factorization.

89990775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3401 (or 3393 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The square root of 89990775 is about 9486.3467678554. The cubic root of 89990775 is about 448.1251626663.

The spelling of 89990775 in words is "eighty-nine million, nine hundred ninety thousand, seven hundred seventy-five".