444847965397 has 4 divisors (see below), whose sum is σ = 485288689536. Its totient is φ = 404407241260.

The previous prime is 444847965313. The next prime is 444847965461. The reversal of 444847965397 is 793569748444.

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 not a de Polignac number, because 444847965397 - 2³¹ = 442700481749 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 (444847965097) 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 3 ways as a sum of consecutive naturals, for example, 20220362053 + ... + 20220362074.

It is an arithmetic number, because the mean of its divisors is an integer number (121322172384).

Almost surely, 2^444847965397 is an apocalyptic number.

It is an amenable number.

444847965397 is a deficient number, since it is larger than the sum of its proper divisors (40440724139).

444847965397 is a wasteful number, since it uses less digits than its factorization.

444847965397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40440724138.

The product of its digits is 731566080, while the sum is 70.

The spelling of 444847965397 in words is "four hundred forty-four billion, eight hundred forty-seven million, nine hundred sixty-five thousand, three hundred ninety-seven".