90039222 has 128 divisors (see below), whose sum is σ = 250629120. Its totient is φ = 23328000.

The previous prime is 90039211. The next prime is 90039247. The reversal of 90039222 is 22293009.

It is a super-2 number, since 2×90039222² = 16214122996730568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 63 ways as a sum of consecutive naturals, for example, 358597 + ... + 358847.

It is an arithmetic number, because the mean of its divisors is an integer number (1958040).

Almost surely, 2^90039222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90039222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125314560).

90039222 is an abundant number, since it is smaller than the sum of its proper divisors (160589898).

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

90039222 is a wasteful number, since it uses less digits than its factorization.

90039222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 90039222 is about 9488.8999362413. The cubic root of 90039222 is about 448.2055650741.

It can be divided in two parts, 9003 and 9222, that added together give a square (18225 = 135²).

The spelling of 90039222 in words is "ninety million, thirty-nine thousand, two hundred twenty-two".