40559964 has 12 divisors (see below), whose sum is σ = 94639944. Its totient is φ = 13519984.

The previous prime is 40559929. The next prime is 40559989. The reversal of 40559964 is 46995504.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×40559964² = 3290221359362592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1689987 + ... + 1690010.

It is an arithmetic number, because the mean of its divisors is an integer number (7886662).

Almost surely, 2^40559964 is an apocalyptic number.

It is an amenable number.

40559964 is an abundant number, since it is smaller than the sum of its proper divisors (54079980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40559964 is a wasteful number, since it uses less digits than its factorization.

40559964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3380004 (or 3380002 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 40559964 is about 6368.6705049013. The cubic root of 40559964 is about 343.5836747312.

The spelling of 40559964 in words is "forty million, five hundred fifty-nine thousand, nine hundred sixty-four".