856448488 has 32 divisors (see below), whose sum is σ = 1853429760. Its totient is φ = 363412800.

The previous prime is 856448477. The next prime is 856448507. The reversal of 856448488 is 884844658.

It is a happy number.

856448488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×856448488² = 1467008025194972288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70056 + ... + 81367.

It is an arithmetic number, because the mean of its divisors is an integer number (57919680).

Almost surely, 2^856448488 is an apocalyptic number.

It is an amenable number.

856448488 is an abundant number, since it is smaller than the sum of its proper divisors (996981272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856448488 is a wasteful number, since it uses less digits than its factorization.

856448488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151537 (or 151533 counting only the distinct ones).

The product of its digits is 7864320, while the sum is 55.

The square root of 856448488 is about 29265.1411751251. The cubic root of 856448488 is about 949.6576746290.

The spelling of 856448488 in words is "eight hundred fifty-six million, four hundred forty-eight thousand, four hundred eighty-eight".