90296990 has 64 divisors (see below), whose sum is σ = 192360960. Its totient is φ = 29877120.

The previous prime is 90296971. The next prime is 90296993. The reversal of 90296990 is 9969209.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90296993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 394196 + ... + 394424.

It is an arithmetic number, because the mean of its divisors is an integer number (3005640).

Almost surely, 2^90296990 is an apocalyptic number.

90296990 is an abundant number, since it is smaller than the sum of its proper divisors (102063970).

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

90296990 is a wasteful number, since it uses less digits than its factorization.

90296990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 90296990 is about 9502.4728360569. The cubic root of 90296990 is about 448.6328713584.

The spelling of 90296990 in words is "ninety million, two hundred ninety-six thousand, nine hundred ninety".