40044006 has 12 divisors (see below), whose sum is σ = 86762052. Its totient is φ = 13347996.

The previous prime is 40043981. The next prime is 40044013. The reversal of 40044006 is 60044004.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2224667 = 40044006 / (4 + 0 + 0 + 4 + 4 + 0 + 0 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 40044006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1112316 + ... + 1112351.

It is an arithmetic number, because the mean of its divisors is an integer number (7230171).

Almost surely, 2^40044006 is an apocalyptic number.

40044006 is an abundant number, since it is smaller than the sum of its proper divisors (46718046).

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

40044006 is a wasteful number, since it uses less digits than its factorization.

40044006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224675 (or 2224672 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40044006 is about 6328.0333437807. The cubic root of 40044006 is about 342.1205587074.

The spelling of 40044006 in words is "forty million, forty-four thousand, six", and thus it is an eban number.