444445631 has 6 divisors (see below), whose sum is σ = 517008240. Its totient is φ = 380953356.

The previous prime is 444445627. The next prime is 444445649. The reversal of 444445631 is 136544444.

It is not a de Polignac number, because 444445631 - 2² = 444445627 is a prime.

It is a super-2 number, since 2×444445631² = 395063837829976322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 444445591 and 444445600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444445601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4535111 + ... + 4535208.

It is an arithmetic number, because the mean of its divisors is an integer number (86168040).

Almost surely, 2^444445631 is an apocalyptic number.

444445631 is a deficient number, since it is larger than the sum of its proper divisors (72562609).

444445631 is an equidigital number, since it uses as much as digits as its factorization.

444445631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9070333 (or 9070326 counting only the distinct ones).

The product of its digits is 92160, while the sum is 35.

The square root of 444445631 is about 21081.8792094064. The cubic root of 444445631 is about 763.1435075018.

The spelling of 444445631 in words is "four hundred forty-four million, four hundred forty-five thousand, six hundred thirty-one".