32440491 has 12 divisors (see below), whose sum is σ = 46929168. Its totient is φ = 21594384.

The previous prime is 32440487. The next prime is 32440517. The reversal of 32440491 is 19404423.

It is not a de Polignac number, because 32440491 - 2² = 32440487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32440591) 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 in 11 ways as a sum of consecutive naturals, for example, 4626 + ... + 9288.

It is an arithmetic number, because the mean of its divisors is an integer number (3910764).

Almost surely, 2^32440491 is an apocalyptic number.

32440491 is a deficient number, since it is larger than the sum of its proper divisors (14488677).

32440491 is a wasteful number, since it uses less digits than its factorization.

32440491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5442 (or 5439 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 32440491 is about 5695.6554495510. The cubic root of 32440491 is about 318.9303182738.

The spelling of 32440491 in words is "thirty-two million, four hundred forty thousand, four hundred ninety-one".