856064441 has 2 divisors, whose sum is σ = 856064442. Its totient is φ = 856064440.

The previous prime is 856064401. The next prime is 856064459. The reversal of 856064441 is 144460658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 817674025 + 38390416 = 28595^2 + 6196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-856064441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 856064395 and 856064404.

It is not a weakly prime, because it can be changed into another prime (856064401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428032220 + 428032221.

It is an arithmetic number, because the mean of its divisors is an integer number (428032221).

Almost surely, 2^856064441 is an apocalyptic number.

It is an amenable number.

856064441 is a deficient number, since it is larger than the sum of its proper divisors (1).

856064441 is an equidigital number, since it uses as much as digits as its factorization.

856064441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 856064441 is about 29258.5789299481. The cubic root of 856064441 is about 949.5157055111.

The spelling of 856064441 in words is "eight hundred fifty-six million, sixty-four thousand, four hundred forty-one".