856484019 has 12 divisors (see below), whose sum is σ = 1265914936. Its totient is φ = 557710272.

The previous prime is 856484009. The next prime is 856484023. The reversal of 856484019 is 910484658.

856484019 is a `hidden beast` number, since 8 + 564 + 84 + 0 + 1 + 9 = 666.

856484019 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 856484019 - 2²⁵ = 822929587 is a prime.

It is a super-2 number, since 2×856484019² = 1467129749604784722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856484009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1106182 + ... + 1106955.

Almost surely, 2^856484019 is an apocalyptic number.

856484019 is a deficient number, since it is larger than the sum of its proper divisors (409430917).

856484019 is a wasteful number, since it uses less digits than its factorization.

856484019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213186 (or 2213183 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 856484019 is about 29265.7482221111. The cubic root of 856484019 is about 949.6708070866.

The spelling of 856484019 in words is "eight hundred fifty-six million, four hundred eighty-four thousand, nineteen".