444404131 has 4 divisors (see below), whose sum is σ = 444470632. Its totient is φ = 444337632.

The previous prime is 444404117. The next prime is 444404153. The reversal of 444404131 is 131404444.

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 444404131 - 2¹⁵ = 444371363 is a prime.

It is a super-2 number, since 2×444404131² = 394990063299730322, 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 = 444404096 and 444404105.

It is not an unprimeable number, because it can be changed into a prime (444404101) 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, 21945 + ... + 37018.

It is an arithmetic number, because the mean of its divisors is an integer number (111117658).

Almost surely, 2^444404131 is an apocalyptic number.

444404131 is a deficient number, since it is larger than the sum of its proper divisors (66501).

444404131 is an equidigital number, since it uses as much as digits as its factorization.

444404131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66500.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 444404131 is about 21080.8949288212. The cubic root of 444404131 is about 763.1197539842.

Adding to 444404131 its reverse (131404444), we get a palindrome (575808575).

The spelling of 444404131 in words is "four hundred forty-four million, four hundred four thousand, one hundred thirty-one".