444440331 has 8 divisors (see below), whose sum is σ = 658430160. Its totient is φ = 296293536.

The previous prime is 444440291. The next prime is 444440371. The reversal of 444440331 is 133044444.

It is an interprime number because it is at equal distance from previous prime (444440291) and next prime (444440371).

It is not a de Polignac number, because 444440331 - 2⁷ = 444440203 is a prime.

It is a super-2 number, since 2×444440331² = 395054415638779122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 16460753 = 444440331 / (4 + 4 + 4 + 4 + 4 + 0 + 3 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 444440295 and 444440304.

It is not an unprimeable number, because it can be changed into a prime (444440371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8230350 + ... + 8230403.

It is an arithmetic number, because the mean of its divisors is an integer number (82303770).

Almost surely, 2^444440331 is an apocalyptic number.

444440331 is a deficient number, since it is larger than the sum of its proper divisors (213989829).

444440331 is a wasteful number, since it uses less digits than its factorization.

444440331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16460762 (or 16460756 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 444440331 is about 21081.7535086624. The cubic root of 444440331 is about 763.1404740024.

Adding to 444440331 its reverse (133044444), we get a palindrome (577484775).

The spelling of 444440331 in words is "four hundred forty-four million, four hundred forty thousand, three hundred thirty-one".