332390091 has 32 divisors (see below), whose sum is σ = 504170496. Its totient is φ = 192960000.

The previous prime is 332390087. The next prime is 332390147. The reversal of 332390091 is 190093233.

It is not a de Polignac number, because 332390091 - 2² = 332390087 is a prime.

It is a super-2 number, since 2×332390091² = 220966345189976562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (332390791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101715 + ... + 104931.

It is an arithmetic number, because the mean of its divisors is an integer number (15755328).

Almost surely, 2^332390091 is an apocalyptic number.

332390091 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

332390091 is a deficient number, since it is larger than the sum of its proper divisors (171780405).

332390091 is a wasteful number, since it uses less digits than its factorization.

332390091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363.

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 332390091 is about 18231.5685282424. The cubic root of 332390091 is about 692.7066487850.

The spelling of 332390091 in words is "three hundred thirty-two million, three hundred ninety thousand, ninety-one".