40044388 has 6 divisors (see below), whose sum is σ = 70077686. Its totient is φ = 20022192.

The previous prime is 40044353. The next prime is 40044409. The reversal of 40044388 is 88344004.

It can be written as a sum of positive squares in only one way, i.e., 39212644 + 831744 = 6262^2 + 912^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005545 + ... + 5005552.

Almost surely, 2^40044388 is an apocalyptic number.

It is an amenable number.

40044388 is a deficient number, since it is larger than the sum of its proper divisors (30033298).

40044388 is a wasteful number, since it uses less digits than its factorization.

40044388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10011101 (or 10011099 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 40044388 is about 6328.0635268619. The cubic root of 40044388 is about 342.1216465909.

The spelling of 40044388 in words is "forty million, forty-four thousand, three hundred eighty-eight".