90022393891 has 8 divisors (see below), whose sum is σ = 93130304400. Its totient is φ = 86914729440.

The previous prime is 90022393883. The next prime is 90022393897. The reversal of 90022393891 is 19839322009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90022393891 - 2³ = 90022393883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90022393897) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 984600 + ... + 1072138.

It is an arithmetic number, because the mean of its divisors is an integer number (11641288050).

Almost surely, 2^90022393891 is an apocalyptic number.

90022393891 is a deficient number, since it is larger than the sum of its proper divisors (3107910509).

90022393891 is a wasteful number, since it uses less digits than its factorization.

90022393891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123029.

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 90022393891 in words is "ninety billion, twenty-two million, three hundred ninety-three thousand, eight hundred ninety-one".