444012431 has 4 divisors (see below), whose sum is σ = 453459552. Its totient is φ = 434565312.

The previous prime is 444012427. The next prime is 444012433. The reversal of 444012431 is 134210444.

It is a happy number.

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 444012431 - 2² = 444012427 is a prime.

It is a super-2 number, since 2×444012431² = 394294077765059522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 444012397 and 444012406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444012433) 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, 4723490 + ... + 4723583.

It is an arithmetic number, because the mean of its divisors is an integer number (113364888).

Almost surely, 2^444012431 is an apocalyptic number.

444012431 is a deficient number, since it is larger than the sum of its proper divisors (9447121).

444012431 is an equidigital number, since it uses as much as digits as its factorization.

444012431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9447120.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 444012431 is about 21071.6024782170. The cubic root of 444012431 is about 762.8954822375.

Adding to 444012431 its reverse (134210444), we get a palindrome (578222875).

The spelling of 444012431 in words is "four hundred forty-four million, twelve thousand, four hundred thirty-one".