944406975385 has 4 divisors (see below), whose sum is σ = 1133288370468. Its totient is φ = 755525580304.

The previous prime is 944406975353. The next prime is 944406975401. The reversal of 944406975385 is 583579604449.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 398458887696 + 545948087689 = 631236^2 + 738883^2 .

It is a cyclic number.

It is not a de Polignac number, because 944406975385 - 2⁵ = 944406975353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94440697534 + ... + 94440697543.

It is an arithmetic number, because the mean of its divisors is an integer number (283322092617).

Almost surely, 2^944406975385 is an apocalyptic number.

It is an amenable number.

944406975385 is a deficient number, since it is larger than the sum of its proper divisors (188881395083).

944406975385 is a wasteful number, since it uses less digits than its factorization.

944406975385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188881395082.

The product of its (nonzero) digits is 130636800, while the sum is 64.

The spelling of 944406975385 in words is "nine hundred forty-four billion, four hundred six million, nine hundred seventy-five thousand, three hundred eighty-five".