40040044 has 24 divisors (see below), whose sum is σ = 77414400. Its totient is φ = 17968080.

The previous prime is 40040041. The next prime is 40040093. The reversal of 40040044 is 44004004.

It is not an unprimeable number, because it can be changed into a prime (40040041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2284 + ... + 9235.

It is an arithmetic number, because the mean of its divisors is an integer number (3225600).

Almost surely, 2^40040044 is an apocalyptic number.

40040044 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40040044 is a deficient number, since it is larger than the sum of its proper divisors (37374356).

40040044 is a wasteful number, since it uses less digits than its factorization.

40040044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11613 (or 11611 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 40040044 is about 6327.7202845891. The cubic root of 40040044 is about 342.1092750681.

Adding to 40040044 its reverse (44004004), we get a palindrome (84044048).

The spelling of 40040044 in words is "forty million, forty thousand, forty-four", and thus it is an eban number.