32440591 has 2 divisors, whose sum is σ = 32440592. Its totient is φ = 32440590.

The previous prime is 32440579. The next prime is 32440613. The reversal of 32440591 is 19504423.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32440591 - 2⁵ = 32440559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32440691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16220295 + 16220296.

It is an arithmetic number, because the mean of its divisors is an integer number (16220296).

Almost surely, 2^32440591 is an apocalyptic number.

32440591 is a deficient number, since it is larger than the sum of its proper divisors (1).

32440591 is an equidigital number, since it uses as much as digits as its factorization.

32440591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 32440591 is about 5695.6642281651. The cubic root of 32440591 is about 318.9306459815.

The spelling of 32440591 in words is "thirty-two million, four hundred forty thousand, five hundred ninety-one".