40044330 has 24 divisors (see below), whose sum is σ = 104115492. Its totient is φ = 10678464.

The previous prime is 40044313. The next prime is 40044337. The reversal of 40044330 is 3344004.

It can be written as a sum of positive squares in 2 ways, for example, as 32867289 + 7177041 = 5733^2 + 2679^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40044337) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 222379 + ... + 222558.

Almost surely, 2^40044330 is an apocalyptic number.

40044330 is an abundant number, since it is smaller than the sum of its proper divisors (64071162).

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

40044330 is a wasteful number, since it uses less digits than its factorization.

40044330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444950 (or 444947 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40044330 is about 6328.0589440997. The cubic root of 40044330 is about 342.1214814153.

Adding to 40044330 its reverse (3344004), we get a palindrome (43388334).

The spelling of 40044330 in words is "forty million, forty-four thousand, three hundred thirty".