90917122 has 16 divisors (see below), whose sum is σ = 145040760. Its totient is φ = 42594048.

The previous prime is 90917119. The next prime is 90917161. The reversal of 90917122 is 22171909.

It can be written as a sum of positive squares in 4 ways, for example, as 86881041 + 4036081 = 9321^2 + 2009^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1948 + ... + 13624.

Almost surely, 2^90917122 is an apocalyptic number.

90917122 is a deficient number, since it is larger than the sum of its proper divisors (54123638).

90917122 is a wasteful number, since it uses less digits than its factorization.

90917122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11925.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 90917122 is about 9535.0470371152. The cubic root of 90917122 is about 449.6575534587.

The spelling of 90917122 in words is "ninety million, nine hundred seventeen thousand, one hundred twenty-two".