9870856 has 16 divisors (see below), whose sum is σ = 18583740. Its totient is φ = 4915200.

The previous prime is 9870853. The next prime is 9870859. The reversal of 9870856 is 6580789.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9870853) and next prime (9870859).

It can be written as a sum of positive squares in 2 ways, for example, as 8584900 + 1285956 = 2930^2 + 1134^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9870851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345 + ... + 4456.

Almost surely, 2^9870856 is an apocalyptic number.

It is an amenable number.

9870856 is a deficient number, since it is larger than the sum of its proper divisors (8712884).

9870856 is a wasteful number, since it uses less digits than its factorization.

9870856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5064 (or 5060 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 9870856 is about 3141.7918454283. The cubic root of 9870856 is about 214.5120066161.

The spelling of 9870856 in words is "nine million, eight hundred seventy thousand, eight hundred fifty-six".