40404544 has 28 divisors (see below), whose sum is σ = 80473804. Its totient is φ = 20127744.

The previous prime is 40404527. The next prime is 40404547. The reversal of 40404544 is 44540404.

It can be written as a sum of positive squares in 2 ways, for example, as 13778944 + 26625600 = 3712^2 + 5160^2 .

It is not an unprimeable number, because it can be changed into a prime (40404547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19024 + ... + 21040.

Almost surely, 2^40404544 is an apocalyptic number.

It is an amenable number.

40404544 is a deficient number, since it is larger than the sum of its proper divisors (40069260).

40404544 is a wasteful number, since it uses less digits than its factorization.

40404544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342 (or 2332 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 40404544 is about 6356.4568747062. The cubic root of 40404544 is about 343.1442584382.

Adding to 40404544 its reverse (44540404), we get a palindrome (84944948).

The spelling of 40404544 in words is "forty million, four hundred four thousand, five hundred forty-four".