90401922 has 24 divisors (see below), whose sum is σ = 210938364. Its totient is φ = 27815904.

The previous prime is 90401911. The next prime is 90401923. The reversal of 90401922 is 22910409.

It can be written as a sum of positive squares in 2 ways, for example, as 63059481 + 27342441 = 7941^2 + 5229^2 .

It is not an unprimeable number, because it can be changed into a prime (90401923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192933 + ... + 193400.

Almost surely, 2^90401922 is an apocalyptic number.

90401922 is an abundant number, since it is smaller than the sum of its proper divisors (120536442).

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

90401922 is a wasteful number, since it uses less digits than its factorization.

90401922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386354 (or 386351 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 90401922 is about 9507.9925326012. The cubic root of 90401922 is about 448.8065859748.

The spelling of 90401922 in words is "ninety million, four hundred one thousand, nine hundred twenty-two".