9985854 has 16 divisors (see below), whose sum is σ = 20004480. Its totient is φ = 3323160.

The previous prime is 9985853. The next prime is 9985867. The reversal of 9985854 is 4585899.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9985853) 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, 4609 + ... + 6419.

It is an arithmetic number, because the mean of its divisors is an integer number (1250280).

Almost surely, 2^9985854 is an apocalyptic number.

9985854 is an abundant number, since it is smaller than the sum of its proper divisors (10018626).

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

9985854 is a wasteful number, since it uses less digits than its factorization.

9985854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735.

The product of its digits is 518400, while the sum is 48.

The square root of 9985854 is about 3160.0401896178. The cubic root of 9985854 is about 215.3418322859.

The spelling of 9985854 in words is "nine million, nine hundred eighty-five thousand, eight hundred fifty-four".