90909132 has 24 divisors (see below), whose sum is σ = 224599536. Its totient is φ = 28520448.

The previous prime is 90909127. The next prime is 90909157. The reversal of 90909132 is 23190909.

It is a junction number, because it is equal to n+sod(n) for n = 90909093 and 90909102.

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, 222613 + ... + 223020.

It is an arithmetic number, because the mean of its divisors is an integer number (9358314).

Almost surely, 2^90909132 is an apocalyptic number.

It is an amenable number.

90909132 is an abundant number, since it is smaller than the sum of its proper divisors (133690404).

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

90909132 is a wasteful number, since it uses less digits than its factorization.

90909132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445657 (or 445655 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 90909132 is about 9534.6280472811. The cubic root of 90909132 is about 449.6443807690.

The spelling of 90909132 in words is "ninety million, nine hundred nine thousand, one hundred thirty-two".