444312421 has 32 divisors (see below), whose sum is σ = 535265280. Its totient is φ = 360956736.

The previous prime is 444312377. The next prime is 444312437. The reversal of 444312421 is 124213444.

It is not a de Polignac number, because 444312421 - 2⁷ = 444312293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444312481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2255295 + ... + 2255491.

It is an arithmetic number, because the mean of its divisors is an integer number (16727040).

Almost surely, 2^444312421 is an apocalyptic number.

It is an amenable number.

444312421 is a deficient number, since it is larger than the sum of its proper divisors (90952859).

444312421 is a wasteful number, since it uses less digits than its factorization.

444312421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433.

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

The square root of 444312421 is about 21078.7196243036. The cubic root of 444312421 is about 763.0672563268.

Adding to 444312421 its reverse (124213444), we get a palindrome (568525865).

The spelling of 444312421 in words is "four hundred forty-four million, three hundred twelve thousand, four hundred twenty-one".