856488454 has 32 divisors (see below), whose sum is σ = 1327011840. Its totient is φ = 414460800.

The previous prime is 856488433. The next prime is 856488499. The reversal of 856488454 is 454884658.

It is a happy number.

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, 3160339 + ... + 3160609.

It is an arithmetic number, because the mean of its divisors is an integer number (41469120).

Almost surely, 2^856488454 is an apocalyptic number.

856488454 is a deficient number, since it is larger than the sum of its proper divisors (470523386).

856488454 is a wasteful number, since it uses less digits than its factorization.

856488454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676.

The product of its digits is 4915200, while the sum is 52.

The square root of 856488454 is about 29265.8239931836. The cubic root of 856488454 is about 949.6724462621.

The spelling of 856488454 in words is "eight hundred fifty-six million, four hundred eighty-eight thousand, four hundred fifty-four".