40663944 has 40 divisors (see below), whose sum is σ = 113898510. Its totient is φ = 13554432.

The previous prime is 40663937. The next prime is 40663957. The reversal of 40663944 is 44936604.

40663944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 34222500 + 6441444 = 5850^2 + 2538^2 .

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

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 40663899 and 40663908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 30729 + ... + 32024.

Almost surely, 2^40663944 is an apocalyptic number.

It is an amenable number.

40663944 is an abundant number, since it is smaller than the sum of its proper divisors (73234566).

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

40663944 is a wasteful number, since it uses less digits than its factorization.

40663944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62771 (or 62758 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 40663944 is about 6376.8286788967. The cubic root of 40663944 is about 343.8770292392.

The spelling of 40663944 in words is "forty million, six hundred sixty-three thousand, nine hundred forty-four".