90335331 has 40 divisors (see below), whose sum is σ = 144009360. Its totient is φ = 56431296.

The previous prime is 90335321. The next prime is 90335339. The reversal of 90335331 is 13353309.

It is not a de Polignac number, because 90335331 - 2⁵ = 90335299 is a prime.

It is a super-2 number, since 2×90335331² = 16320944053759122, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 90335295 and 90335304.

It is not an unprimeable number, because it can be changed into a prime (90335339) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 397840 + ... + 398066.

It is an arithmetic number, because the mean of its divisors is an integer number (3600234).

Almost surely, 2^90335331 is an apocalyptic number.

90335331 is a deficient number, since it is larger than the sum of its proper divisors (53674029).

90335331 is an equidigital number, since it uses as much as digits as its factorization.

90335331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 3645, while the sum is 27.

The square root of 90335331 is about 9504.4900441844. The cubic root of 90335331 is about 448.6963603663.

The spelling of 90335331 in words is "ninety million, three hundred thirty-five thousand, three hundred thirty-one".