856479285 has 16 divisors (see below), whose sum is σ = 1522630080. Its totient is φ = 456788880.

The previous prime is 856479263. The next prime is 856479343. The reversal of 856479285 is 582974658.

856479285 is a `hidden beast` number, since 8 + 564 + 79 + 2 + 8 + 5 = 666.

856479285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 856479285 - 2¹² = 856475189 is a prime.

It is a super-2 number, since 2×856479285² = 1467113531268222450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3172011 + ... + 3172280.

It is an arithmetic number, because the mean of its divisors is an integer number (95164380).

Almost surely, 2^856479285 is an apocalyptic number.

It is an amenable number.

856479285 is a deficient number, since it is larger than the sum of its proper divisors (666150795).

856479285 is a wasteful number, since it uses less digits than its factorization.

856479285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6344305 (or 6344299 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The square root of 856479285 is about 29265.6673424680. The cubic root of 856479285 is about 949.6690573945.

The spelling of 856479285 in words is "eight hundred fifty-six million, four hundred seventy-nine thousand, two hundred eighty-five".