90122998 has 24 divisors (see below), whose sum is σ = 156825936. Its totient is φ = 38050320.

The previous prime is 90122957. The next prime is 90123041. The reversal of 90122998 is 89922109.

It is a self number, because there is not a number n which added to its sum of digits gives 90122998.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69936 + ... + 71212.

It is an arithmetic number, because the mean of its divisors is an integer number (6534414).

Almost surely, 2^90122998 is an apocalyptic number.

90122998 is a deficient number, since it is larger than the sum of its proper divisors (66702938).

90122998 is a wasteful number, since it uses less digits than its factorization.

90122998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 1357 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 90122998 is about 9493.3133309714. The cubic root of 90122998 is about 448.3445312896.

The spelling of 90122998 in words is "ninety million, one hundred twenty-two thousand, nine hundred ninety-eight".