985085839 has 8 divisors (see below), whose sum is σ = 1020757760. Its totient is φ = 949994136.

The previous prime is 985085819. The next prime is 985085861. The reversal of 985085839 is 938580589.

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

It is a cyclic number.

It is not a de Polignac number, because 985085839 - 2⁹ = 985085327 is a prime.

It is a super-2 number, since 2×985085839² = 1940788220396667842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 985085839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985085819) 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, 141597 + ... + 148390.

It is an arithmetic number, because the mean of its divisors is an integer number (127594720).

Almost surely, 2^985085839 is an apocalyptic number.

985085839 is a deficient number, since it is larger than the sum of its proper divisors (35671921).

985085839 is a wasteful number, since it uses less digits than its factorization.

985085839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290109.

The product of its (nonzero) digits is 3110400, while the sum is 55.

The square root of 985085839 is about 31386.0771521387. The cubic root of 985085839 is about 995.0036914756.

The spelling of 985085839 in words is "nine hundred eighty-five million, eighty-five thousand, eight hundred thirty-nine".