3944442173 has 4 divisors (see below), whose sum is σ = 4507933920. Its totient is φ = 3380950428.

The previous prime is 3944442169. The next prime is 3944442193. The reversal of 3944442173 is 3712444493.

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 3944442173 - 2² = 3944442169 is a prime.

It is a super-2 number, since 2×3944442173² = 31117248112281923858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3944442173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944442193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281745863 + ... + 281745876.

It is an arithmetic number, because the mean of its divisors is an integer number (1126983480).

Almost surely, 2^3944442173 is an apocalyptic number.

It is an amenable number.

3944442173 is a deficient number, since it is larger than the sum of its proper divisors (563491747).

3944442173 is an equidigital number, since it uses as much as digits as its factorization.

3944442173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563491746.

The product of its digits is 290304, while the sum is 41.

The square root of 3944442173 is about 62804.7941880236. The cubic root of 3944442173 is about 1580.0173812381.

The spelling of 3944442173 in words is "three billion, nine hundred forty-four million, four hundred forty-two thousand, one hundred seventy-three".