90908970 has 32 divisors (see below), whose sum is σ = 221883840. Its totient is φ = 23831040.

The previous prime is 90908959. The next prime is 90909031. The reversal of 90908970 is 7980909.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23911 + ... + 27450.

It is an arithmetic number, because the mean of its divisors is an integer number (6933870).

Almost surely, 2^90908970 is an apocalyptic number.

90908970 is an abundant number, since it is smaller than the sum of its proper divisors (130974870).

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

90908970 is a wasteful number, since it uses less digits than its factorization.

90908970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51430.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 90908970 is about 9534.6195519276. The cubic root of 90908970 is about 449.6441136802.

The spelling of 90908970 in words is "ninety million, nine hundred eight thousand, nine hundred seventy".