985100 has 18 divisors (see below), whose sum is σ = 2137884. Its totient is φ = 394000.

The previous prime is 985097. The next prime is 985109. The reversal of 985100 is 1589.

It is a nialpdrome in base 10.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 985100.

It is not an unprimeable number, because it can be changed into a prime (985109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4826 + ... + 5025.

2⁹⁸⁵¹⁰⁰ is an apocalyptic number.

It is an amenable number.

985100 is an abundant number, since it is smaller than the sum of its proper divisors (1152784).

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

985100 is a wasteful number, since it uses less digits than its factorization.

985100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9865 (or 9858 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 985100 is about 992.5220400575. The cubic root of 985100 is about 99.5008459310.

Adding to 985100 its reverse (1589), we get a palindrome (986689).

The spelling of 985100 in words is "nine hundred eighty-five thousand, one hundred".