9985983 has 8 divisors (see below), whose sum is σ = 15216768. Its totient is φ = 5706264.

The previous prime is 9985973. The next prime is 9985993. The reversal of 9985983 is 3895899.

It is an interprime number because it is at equal distance from previous prime (9985973) and next prime (9985993).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9985983 - 2¹⁶ = 9920447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9985903) 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, 237741 + ... + 237782.

It is an arithmetic number, because the mean of its divisors is an integer number (1902096).

Almost surely, 2^9985983 is an apocalyptic number.

9985983 is a deficient number, since it is larger than the sum of its proper divisors (5230785).

9985983 is a wasteful number, since it uses less digits than its factorization.

9985983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475533.

The product of its digits is 699840, while the sum is 51.

The square root of 9985983 is about 3160.0606006847. The cubic root of 9985983 is about 215.3427595635.

The spelling of 9985983 in words is "nine million, nine hundred eighty-five thousand, nine hundred eighty-three".