40816944 has 60 divisors (see below), whose sum is σ = 130552656. Its totient is φ = 11661696.

The previous prime is 40816939. The next prime is 40816981. The reversal of 40816944 is 44961804.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 40816899 and 40816908.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19239 + ... + 21254.

Almost surely, 2^40816944 is an apocalyptic number.

It is an amenable number.

40816944 is an abundant number, since it is smaller than the sum of its proper divisors (89735712).

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

40816944 is a wasteful number, since it uses less digits than its factorization.

40816944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40514 (or 40505 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 40816944 is about 6388.8139744400. The cubic root of 40816944 is about 344.3077739511.

It can be divided in two parts, 4081 and 6944, that added together give a square (11025 = 105²).

The spelling of 40816944 in words is "forty million, eight hundred sixteen thousand, nine hundred forty-four".