444444851893 has 16 divisors (see below), whose sum is σ = 508873052160. Its totient is φ = 380250990000.

The previous prime is 444444851891. The next prime is 444444851911. The reversal of 444444851893 is 398158444444.

It is not a de Polignac number, because 444444851893 - 2¹ = 444444851891 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 (444444851891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20974578 + ... + 20995756.

It is an arithmetic number, because the mean of its divisors is an integer number (31804565760).

Almost surely, 2^444444851893 is an apocalyptic number.

It is an amenable number.

444444851893 is a deficient number, since it is larger than the sum of its proper divisors (64428200267).

444444851893 is a wasteful number, since it uses less digits than its factorization.

444444851893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26568.

The product of its digits is 35389440, while the sum is 58.

The spelling of 444444851893 in words is "four hundred forty-four billion, four hundred forty-four million, eight hundred fifty-one thousand, eight hundred ninety-three".