444164239 has 4 divisors (see below), whose sum is σ = 450793624. Its totient is φ = 437534856.

The previous prime is 444164191. The next prime is 444164251. The reversal of 444164239 is 932461444.

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

It is a cyclic number.

It is not a de Polignac number, because 444164239 - 2¹³ = 444156047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 444164198 and 444164207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444164269) 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, 3314592 + ... + 3314725.

It is an arithmetic number, because the mean of its divisors is an integer number (112698406).

Almost surely, 2^444164239 is an apocalyptic number.

444164239 is a deficient number, since it is larger than the sum of its proper divisors (6629385).

444164239 is an equidigital number, since it uses as much as digits as its factorization.

444164239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6629384.

The product of its digits is 82944, while the sum is 37.

The square root of 444164239 is about 21075.2043643709. The cubic root of 444164239 is about 762.9824170715.

The spelling of 444164239 in words is "four hundred forty-four million, one hundred sixty-four thousand, two hundred thirty-nine".