99000856 has 16 divisors (see below), whose sum is σ = 191615040. Its totient is φ = 47903520.

The previous prime is 99000851. The next prime is 99000857. The reversal of 99000856 is 65800099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99000851) 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, 199351 + ... + 199846.

It is an arithmetic number, because the mean of its divisors is an integer number (11975940).

Almost surely, 2^99000856 is an apocalyptic number.

It is an amenable number.

99000856 is a deficient number, since it is larger than the sum of its proper divisors (92614184).

99000856 is a wasteful number, since it uses less digits than its factorization.

99000856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399234 (or 399230 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 99000856 is about 9949.9173865917. The cubic root of 99000856 is about 462.6078342180.

It can be divided in two parts, 99000 and 856, that added together give a square (99856 = 316²).

The spelling of 99000856 in words is "ninety-nine million, eight hundred fifty-six", and thus it is an aban number.