444999169 has 4 divisors (see below), whose sum is σ = 445606996. Its totient is φ = 444391344.

The previous prime is 444999161. The next prime is 444999173. The reversal of 444999169 is 961999444.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 435264769 + 9734400 = 20863^2 + 3120^2 .

It is a cyclic number.

It is not a de Polignac number, because 444999169 - 2³ = 444999161 is a prime.

It is a super-2 number, since 2×444999169² = 396048520821381122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444999161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302814 + ... + 304279.

It is an arithmetic number, because the mean of its divisors is an integer number (111401749).

Almost surely, 2^444999169 is an apocalyptic number.

It is an amenable number.

444999169 is a deficient number, since it is larger than the sum of its proper divisors (607827).

444999169 is an equidigital number, since it uses as much as digits as its factorization.

444999169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607826.

The product of its digits is 2519424, while the sum is 55.

The square root of 444999169 is about 21095.0034131308. The cubic root of 444999169 is about 763.4601969161.

The spelling of 444999169 in words is "four hundred forty-four million, nine hundred ninety-nine thousand, one hundred sixty-nine".