99850 has 12 divisors (see below), whose sum is σ = 185814. Its totient is φ = 39920.

The previous prime is 99839. The next prime is 99859. The reversal of 99850 is 5899.

It can be written as a sum of positive squares in 3 ways, for example, as 43681 + 56169 = 209^2 + 237^2 .

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 949 + ... + 1048.

2⁹⁹⁸⁵⁰ is an apocalyptic number.

99850 is a deficient number, since it is larger than the sum of its proper divisors (85964).

99850 is a wasteful number, since it uses less digits than its factorization.

99850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009 (or 2004 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 99850 is about 315.9905061865. The cubic root of 99850 is about 46.3926687783.

It can be divided in two parts, 99 and 850, that added together give a palindrome (949).

The spelling of 99850 in words is "ninety-nine thousand, eight hundred fifty".