985916959 has 4 divisors (see below), whose sum is σ = 989476504. Its totient is φ = 982357416.

The previous prime is 985916951. The next prime is 985916969. The reversal of 985916959 is 959619589.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 985916959 - 2³ = 985916951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 985916897 and 985916906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985916951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1779357 + ... + 1779910.

It is an arithmetic number, because the mean of its divisors is an integer number (247369126).

Almost surely, 2^985916959 is an apocalyptic number.

985916959 is a deficient number, since it is larger than the sum of its proper divisors (3559545).

985916959 is a wasteful number, since it uses less digits than its factorization.

985916959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559544.

The product of its digits is 7873200, while the sum is 61.

The square root of 985916959 is about 31399.3146262781. The cubic root of 985916959 is about 995.2834420559.

The spelling of 985916959 in words is "nine hundred eighty-five million, nine hundred sixteen thousand, nine hundred fifty-nine".