90831412922 has 4 divisors (see below), whose sum is σ = 136247119386. Its totient is φ = 45415706460.

The previous prime is 90831412921. The next prime is 90831412999. The reversal of 90831412922 is 22921413809.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22921413809 = 7 ⋅3274487687.

It can be written as a sum of positive squares in only one way, i.e., 86295525121 + 4535887801 = 293761^2 + 67349^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90831412922.

It is not an unprimeable number, because it can be changed into a prime (90831412921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22707853229 + ... + 22707853232.

Almost surely, 2^90831412922 is an apocalyptic number.

90831412922 is a deficient number, since it is larger than the sum of its proper divisors (45415706464).

90831412922 is a wasteful number, since it uses less digits than its factorization.

90831412922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45415706463.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 90831412922 in words is "ninety billion, eight hundred thirty-one million, four hundred twelve thousand, nine hundred twenty-two".