444444444393 has 4 divisors (see below), whose sum is σ = 592592592528. Its totient is φ = 296296296260.

The previous prime is 444444444377. The next prime is 444444444401. The reversal of 444444444393 is 393444444444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 444444444393 - 2⁴ = 444444444377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (444444444313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74074074063 + ... + 74074074068.

It is an arithmetic number, because the mean of its divisors is an integer number (148148148132).

Almost surely, 2^444444444393 is an apocalyptic number.

It is an amenable number.

444444444393 is a deficient number, since it is larger than the sum of its proper divisors (148148148135).

444444444393 is a wasteful number, since it uses less digits than its factorization.

444444444393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148148148134.

The product of its digits is 21233664, while the sum is 51.

Adding to 444444444393 its sum of digits (51), we get a palindrome (444444444444).

The spelling of 444444444393 in words is "four hundred forty-four billion, four hundred forty-four million, four hundred forty-four thousand, three hundred ninety-three".