99000857 has 2 divisors, whose sum is σ = 99000858. Its totient is φ = 99000856.

The previous prime is 99000851. The next prime is 99000883. The reversal of 99000857 is 75800099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90174016 + 8826841 = 9496^2 + 2971^2 .

It is a cyclic number.

It is not a de Polignac number, because 99000857 - 2⁶ = 99000793 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99000857.

It is not a weakly prime, because it can be changed into another prime (99000851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49500428 + 49500429.

It is an arithmetic number, because the mean of its divisors is an integer number (49500429).

Almost surely, 2^99000857 is an apocalyptic number.

It is an amenable number.

99000857 is a deficient number, since it is larger than the sum of its proper divisors (1).

99000857 is an equidigital number, since it uses as much as digits as its factorization.

99000857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 99000857 is about 9949.9174368434. The cubic root of 99000857 is about 462.6078357756.

The spelling of 99000857 in words is "ninety-nine million, eight hundred fifty-seven", and thus it is an aban number.