332490391 has 2 divisors, whose sum is σ = 332490392. Its totient is φ = 332490390.

The previous prime is 332490349. The next prime is 332490397. The reversal of 332490391 is 193094233.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 332490391 - 2¹⁵ = 332457623 is a prime.

It is a super-2 number, since 2×332490391² = 221099720214665762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (332490397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166245195 + 166245196.

It is an arithmetic number, because the mean of its divisors is an integer number (166245196).

Almost surely, 2^332490391 is an apocalyptic number.

332490391 is a deficient number, since it is larger than the sum of its proper divisors (1).

332490391 is an equidigital number, since it uses as much as digits as its factorization.

332490391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 332490391 is about 18234.3190440444. The cubic root of 332490391 is about 692.7763174178.

The spelling of 332490391 in words is "three hundred thirty-two million, four hundred ninety thousand, three hundred ninety-one".