332442991 has 2 divisors, whose sum is σ = 332442992. Its totient is φ = 332442990.

The previous prime is 332442961. The next prime is 332443049. The reversal of 332442991 is 199244233.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 332442991 - 2²⁵ = 298888559 is a prime.

It is a super-2 number, since 2×332442991² = 221036684530052162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 332442991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (332442911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166221495 + 166221496.

It is an arithmetic number, because the mean of its divisors is an integer number (166221496).

Almost surely, 2^332442991 is an apocalyptic number.

332442991 is a deficient number, since it is larger than the sum of its proper divisors (1).

332442991 is an equidigital number, since it uses as much as digits as its factorization.

332442991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 37.

The square root of 332442991 is about 18233.0192507988. The cubic root of 332442991 is about 692.7433950047.

The spelling of 332442991 in words is "three hundred thirty-two million, four hundred forty-two thousand, nine hundred ninety-one".