856144443 has 32 divisors (see below), whose sum is σ = 1461680640. Its totient is φ = 432725760.

The previous prime is 856144423. The next prime is 856144469. The reversal of 856144443 is 344441658.

It is not a de Polignac number, because 856144443 - 2⁶ = 856144379 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (856144403) 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 31 ways as a sum of consecutive naturals, for example, 41538 + ... + 58631.

It is an arithmetic number, because the mean of its divisors is an integer number (45677520).

Almost surely, 2^856144443 is an apocalyptic number.

856144443 is a deficient number, since it is larger than the sum of its proper divisors (605536197).

856144443 is a wasteful number, since it uses less digits than its factorization.

856144443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100227.

The product of its digits is 184320, while the sum is 39.

The square root of 856144443 is about 29259.9460525818. The cubic root of 856144443 is about 949.5452830311.

The spelling of 856144443 in words is "eight hundred fifty-six million, one hundred forty-four thousand, four hundred forty-three".