40489664 has 28 divisors (see below), whose sum is σ = 80735424. Its totient is φ = 20146944.

The previous prime is 40489661. The next prime is 40489679. The reversal of 40489664 is 46698404.

It is not an unprimeable number, because it can be changed into a prime (40489661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12854 + ... + 15690.

It is an arithmetic number, because the mean of its divisors is an integer number (2883408).

Almost surely, 2^40489664 is an apocalyptic number.

It is an amenable number.

40489664 is a deficient number, since it is larger than the sum of its proper divisors (40245760).

40489664 is a wasteful number, since it uses less digits than its factorization.

40489664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072 (or 3062 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 40489664 is about 6363.1489060056. The cubic root of 40489664 is about 343.3850560423.

The spelling of 40489664 in words is "forty million, four hundred eighty-nine thousand, six hundred sixty-four".