899000856 has 96 divisors (see below), whose sum is σ = 2719276560. Its totient is φ = 276607872.

The previous prime is 899000849. The next prime is 899000863. The reversal of 899000856 is 658000998.

It is an interprime number because it is at equal distance from previous prime (899000849) and next prime (899000863).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7486 + ... + 43058.

Almost surely, 2^899000856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 899000856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359638280).

899000856 is an abundant number, since it is smaller than the sum of its proper divisors (1820275704).

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

899000856 is a wasteful number, since it uses less digits than its factorization.

899000856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35607 (or 35591 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 899000856 is about 29983.3429757257. The cubic root of 899000856 is about 965.1319697454.

The spelling of 899000856 in words is "eight hundred ninety-nine million, eight hundred fifty-six", and thus it is an aban number.