41640939 has 32 divisors (see below), whose sum is σ = 65759040. Its totient is φ = 25952256.

The previous prime is 41640917. The next prime is 41640959. The reversal of 41640939 is 93904614.

41640939 is a `hidden beast` number, since 4 + 1 + 640 + 9 + 3 + 9 = 666.

It is not a de Polignac number, because 41640939 - 2⁷ = 41640811 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (41640959) 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 in 31 ways as a sum of consecutive naturals, for example, 117787 + ... + 118139.

It is an arithmetic number, because the mean of its divisors is an integer number (2054970).

Almost surely, 2^41640939 is an apocalyptic number.

41640939 is a deficient number, since it is larger than the sum of its proper divisors (24118101).

41640939 is a wasteful number, since it uses less digits than its factorization.

41640939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 41640939 is about 6452.9790794640. The cubic root of 41640939 is about 346.6092682131.

The spelling of 41640939 in words is "forty-one million, six hundred forty thousand, nine hundred thirty-nine".