444889957 has 8 divisors (see below), whose sum is σ = 461251800. Its totient is φ = 428596224.

The previous prime is 444889859. The next prime is 444889969. The reversal of 444889957 is 759988444.

It can be written as a sum of positive squares in 4 ways, for example, as 50708641 + 394181316 = 7121^2 + 19854^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444889957 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 (444889987) 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, 3532 + ... + 30037.

It is an arithmetic number, because the mean of its divisors is an integer number (57656475).

Almost surely, 2^444889957 is an apocalyptic number.

It is an amenable number.

444889957 is a deficient number, since it is larger than the sum of its proper divisors (16361843).

444889957 is a wasteful number, since it uses less digits than its factorization.

444889957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34055.

The product of its digits is 11612160, while the sum is 58.

The square root of 444889957 is about 21092.4146792158. The cubic root of 444889957 is about 763.3977354984.

It can be divided in two parts, 44488 and 9957, that added together give a palindrome (54445).

The spelling of 444889957 in words is "four hundred forty-four million, eight hundred eighty-nine thousand, nine hundred fifty-seven".