99205857 has 8 divisors (see below), whose sum is σ = 146971680. Its totient is φ = 66137220.

The previous prime is 99205853. The next prime is 99205871. The reversal of 99205857 is 75850299.

It is a happy number.

It is not a de Polignac number, because 99205857 - 2² = 99205853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99205853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1837119 + ... + 1837172.

It is an arithmetic number, because the mean of its divisors is an integer number (18371460).

Almost surely, 2^99205857 is an apocalyptic number.

It is an amenable number.

99205857 is a deficient number, since it is larger than the sum of its proper divisors (47765823).

99205857 is a wasteful number, since it uses less digits than its factorization.

99205857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674300 (or 3674294 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 99205857 is about 9960.2137025267. The cubic root of 99205857 is about 462.9269213093.

The spelling of 99205857 in words is "ninety-nine million, two hundred five thousand, eight hundred fifty-seven".