40400044 has 6 divisors (see below), whose sum is σ = 70700084. Its totient is φ = 20200020.

The previous prime is 40400033. The next prime is 40400053. The reversal of 40400044 is 44000404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050002 + ... + 5050009.

Almost surely, 2^40400044 is an apocalyptic number.

It is an amenable number.

40400044 is a deficient number, since it is larger than the sum of its proper divisors (30300040).

40400044 is a wasteful number, since it uses less digits than its factorization.

40400044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10100015 (or 10100013 counting only the distinct ones).

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

The square root of 40400044 is about 6356.1028940696. The cubic root of 40400044 is about 343.1315188934.

Adding to 40400044 its reverse (44000404), we get a palindrome (84400448).

The spelling of 40400044 in words is "forty million, four hundred thousand, forty-four".