40944217 has 4 divisors (see below), whose sum is σ = 41124816. Its totient is φ = 40763620.

The previous prime is 40944193. The next prime is 40944227. The reversal of 40944217 is 71244904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40944217 - 2²³ = 32555609 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40944227) 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 3 ways as a sum of consecutive naturals, for example, 89959 + ... + 90412.

It is an arithmetic number, because the mean of its divisors is an integer number (10281204).

Almost surely, 2^40944217 is an apocalyptic number.

It is an amenable number.

40944217 is a deficient number, since it is larger than the sum of its proper divisors (180599).

40944217 is a wasteful number, since it uses less digits than its factorization.

40944217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180598.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 40944217 is about 6398.7668343205. The cubic root of 40944217 is about 344.6652694010.

The spelling of 40944217 in words is "forty million, nine hundred forty-four thousand, two hundred seventeen".