8423408856 has 32 divisors (see below), whose sum is σ = 21151304640. Its totient is φ = 2795431968.

The previous prime is 8423408843. The next prime is 8423408893. The reversal of 8423408856 is 6588043248.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 767626 + ... + 778521.

It is an arithmetic number, because the mean of its divisors is an integer number (660978270).

Almost surely, 2^8423408856 is an apocalyptic number.

It is an amenable number.

8423408856 is an abundant number, since it is smaller than the sum of its proper divisors (12727895784).

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

8423408856 is a wasteful number, since it uses less digits than its factorization.

8423408856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546383 (or 1546379 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 48.

The square root of 8423408856 is about 91779.1308304889. The cubic root of 8423408856 is about 2034.6792698638.

The spelling of 8423408856 in words is "eight billion, four hundred twenty-three million, four hundred eight thousand, eight hundred fifty-six".