444111213 has 72 divisors (see below), whose sum is σ = 780241728. Its totient is φ = 219967488.

The previous prime is 444111211. The next prime is 444111223. The reversal of 444111213 is 312111444.

It is not a de Polignac number, because 444111213 - 2¹ = 444111211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 444111213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444111211) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1025445 + ... + 1025877.

Almost surely, 2^444111213 is an apocalyptic number.

It is an amenable number.

444111213 is a deficient number, since it is larger than the sum of its proper divisors (336130515).

444111213 is a wasteful number, since it uses less digits than its factorization.

444111213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 473 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 444111213 is about 21073.9463081787. The cubic root of 444111213 is about 762.9520532915.

Adding to 444111213 its reverse (312111444), we get a palindrome (756222657).

The spelling of 444111213 in words is "four hundred forty-four million, one hundred eleven thousand, two hundred thirteen".