444444391357 has 4 divisors (see below), whose sum is σ = 444486493440. Its totient is φ = 444402289276.

The previous prime is 444444391337. The next prime is 444444391379. The reversal of 444444391357 is 753193444444.

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 444444391357 - 2³¹ = 442296907709 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 (444444391337) 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, 21035203 + ... + 21056320.

It is an arithmetic number, because the mean of its divisors is an integer number (111121623360).

Almost surely, 2^444444391357 is an apocalyptic number.

It is an amenable number.

444444391357 is a deficient number, since it is larger than the sum of its proper divisors (42102083).

444444391357 is a wasteful number, since it uses less digits than its factorization.

444444391357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42102082.

The product of its digits is 11612160, while the sum is 52.

The spelling of 444444391357 in words is "four hundred forty-four billion, four hundred forty-four million, three hundred ninety-one thousand, three hundred fifty-seven".