9986850 has 36 divisors (see below), whose sum is σ = 26832546. Its totient is φ = 2663040.

The previous prime is 9986849. The next prime is 9986857. The reversal of 9986850 is 586899.

It can be written as a sum of positive squares in 3 ways, for example, as 9345249 + 641601 = 3057^2 + 801^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 9986796 and 9986805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9986857) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10647 + ... + 11546.

Almost surely, 2^9986850 is an apocalyptic number.

9986850 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

9986850 is an abundant number, since it is smaller than the sum of its proper divisors (16845696).

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

9986850 is a wasteful number, since it uses less digits than its factorization.

9986850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22211 (or 22203 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 9986850 is about 3160.1977786208. The cubic root of 9986850 is about 215.3489915245.

The spelling of 9986850 in words is "nine million, nine hundred eighty-six thousand, eight hundred fifty".