8406856 has 16 divisors (see below), whose sum is σ = 15800940. Its totient is φ = 4193280.

The previous prime is 8406847. The next prime is 8406901. The reversal of 8406856 is 6586048.

It can be written as a sum of positive squares in 2 ways, for example, as 8352100 + 54756 = 2890^2 + 234^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3160 + ... + 5176.

Almost surely, 2^8406856 is an apocalyptic number.

It is an amenable number.

8406856 is a deficient number, since it is larger than the sum of its proper divisors (7394084).

8406856 is a wasteful number, since it uses less digits than its factorization.

8406856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544 (or 2540 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 8406856 is about 2899.4578803632. The cubic root of 8406856 is about 203.3345611918.

The spelling of 8406856 in words is "eight million, four hundred six thousand, eight hundred fifty-six".