90641222 has 16 divisors (see below), whose sum is σ = 155833632. Its totient is φ = 38734080.

The previous prime is 90641219. The next prime is 90641251. The reversal of 90641222 is 22214609.

It is a super-2 number, since 2×90641222² = 16431662251306568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90641191 and 90641200.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 4229 + ... + 14112.

It is an arithmetic number, because the mean of its divisors is an integer number (9739602).

Almost surely, 2^90641222 is an apocalyptic number.

90641222 is a deficient number, since it is larger than the sum of its proper divisors (65192410).

90641222 is a wasteful number, since it uses less digits than its factorization.

90641222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18703.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 90641222 is about 9520.5683653866. The cubic root of 90641222 is about 449.2022441948.

The spelling of 90641222 in words is "ninety million, six hundred forty-one thousand, two hundred twenty-two".