444442431 has 4 divisors (see below), whose sum is σ = 592589912. Its totient is φ = 296294952.

The previous prime is 444442417. The next prime is 444442489. The reversal of 444442431 is 134244444.

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

It is not a de Polignac number, because 444442431 - 2⁷ = 444442303 is a prime.

It is a super-2 number, since 2×444442431² = 395058148946379522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444442331) 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, 74073736 + ... + 74073741.

It is an arithmetic number, because the mean of its divisors is an integer number (148147478).

Almost surely, 2^444442431 is an apocalyptic number.

444442431 is a deficient number, since it is larger than the sum of its proper divisors (148147481).

444442431 is a wasteful number, since it uses less digits than its factorization.

444442431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148147480.

The product of its digits is 24576, while the sum is 30.

The square root of 444442431 is about 21081.8033147072. The cubic root of 444442431 is about 763.1416759579.

Adding to 444442431 its reverse (134244444), we get a palindrome (578686875).

The spelling of 444442431 in words is "four hundred forty-four million, four hundred forty-two thousand, four hundred thirty-one".