40944489 has 8 divisors (see below), whose sum is σ = 54756000. Its totient is φ = 27214656.

The previous prime is 40944413. The next prime is 40944509. The reversal of 40944489 is 98444904.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40944489 - 2⁹ = 40943977 is a prime.

It is a super-2 number, since 2×40944489² = 3352902358942242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 40944489.

It is not an unprimeable number, because it can be changed into a prime (40944689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19239 + ... + 21260.

It is an arithmetic number, because the mean of its divisors is an integer number (6844500).

Almost surely, 2^40944489 is an apocalyptic number.

It is an amenable number.

40944489 is a deficient number, since it is larger than the sum of its proper divisors (13811511).

40944489 is a wasteful number, since it uses less digits than its factorization.

40944489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40839.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 40944489 is about 6398.7880883805. The cubic root of 40944489 is about 344.6660326244. Note that the first 3 decimals are identical.

The spelling of 40944489 in words is "forty million, nine hundred forty-four thousand, four hundred eighty-nine".