90441331 has 4 divisors (see below), whose sum is σ = 90768112. Its totient is φ = 90114552.

The previous prime is 90441319. The next prime is 90441371. The reversal of 90441331 is 13314409.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90441331 - 2²³ = 82052723 is a prime.

It is a super-2 number, since 2×90441331² = 16359268706103122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90441296 and 90441305.

It is not an unprimeable number, because it can be changed into a prime (90441371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162975 + ... + 163528.

It is an arithmetic number, because the mean of its divisors is an integer number (22692028).

Almost surely, 2^90441331 is an apocalyptic number.

90441331 is a deficient number, since it is larger than the sum of its proper divisors (326781).

90441331 is a wasteful number, since it uses less digits than its factorization.

90441331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326780.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 90441331 is about 9510.0647211257. The cubic root of 90441331 is about 448.8717927347.

The spelling of 90441331 in words is "ninety million, four hundred forty-one thousand, three hundred thirty-one".