40404064 has 24 divisors (see below), whose sum is σ = 79901640. Its totient is φ = 20111616.

The previous prime is 40404043. The next prime is 40404097. The reversal of 40404064 is 46040404.

It is a happy number.

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, 4747 + ... + 10165.

It is an arithmetic number, because the mean of its divisors is an integer number (3329235).

Almost surely, 2^40404064 is an apocalyptic number.

It is an amenable number.

40404064 is a deficient number, since it is larger than the sum of its proper divisors (39497576).

40404064 is a wasteful number, since it uses less digits than its factorization.

40404064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5662 (or 5654 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 40404064 is about 6356.4191177109. The cubic root of 40404064 is about 343.1428995985.

Adding to 40404064 its reverse (46040404), we get a palindrome (86444468).

The spelling of 40404064 in words is "forty million, four hundred four thousand, sixty-four".