444213143 has 6 divisors (see below), whose sum is σ = 488267472. Its totient is φ = 403830020.

The previous prime is 444213139. The next prime is 444213169. The reversal of 444213143 is 341312444.

It is not a de Polignac number, because 444213143 - 2² = 444213139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444213113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1835471 + ... + 1835712.

It is an arithmetic number, because the mean of its divisors is an integer number (81377912).

Almost surely, 2^444213143 is an apocalyptic number.

444213143 is a deficient number, since it is larger than the sum of its proper divisors (44054329).

444213143 is a wasteful number, since it uses less digits than its factorization.

444213143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671205 (or 3671194 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 444213143 is about 21076.3645584337. The cubic root of 444213143 is about 763.0104183674.

Adding to 444213143 its reverse (341312444), we get a palindrome (785525587).

The spelling of 444213143 in words is "four hundred forty-four million, two hundred thirteen thousand, one hundred forty-three".