44404040 has 32 divisors (see below), whose sum is σ = 100138680. Its totient is φ = 17720832.

The previous prime is 44404027. The next prime is 44404043. The reversal of 44404040 is 4040444.

It can be written as a sum of positive squares in 4 ways, for example, as 30846916 + 13557124 = 5554^2 + 3682^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (44404043) 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 7 ways as a sum of consecutive naturals, for example, 21284 + ... + 23276.

Almost surely, 2^44404040 is an apocalyptic number.

44404040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44404040 is an abundant number, since it is smaller than the sum of its proper divisors (55734640).

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

44404040 is a wasteful number, since it uses less digits than its factorization.

44404040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561 (or 2557 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 44404040 is about 6663.6356443011. The cubic root of 44404040 is about 354.1121501939.

Adding to 44404040 its reverse (4040444), we get a palindrome (48444484).

It can be divided in two parts, 4 and 4404040, that added together give a palindrome (4404044).

The spelling of 44404040 in words is "forty-four million, four hundred four thousand, forty".