985809994 has 16 divisors (see below), whose sum is σ = 1616233248. Its totient is φ = 448197552.

The previous prime is 985809989. The next prime is 985810073. The reversal of 985809994 is 499908589.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281212 + ... + 284695.

It is an arithmetic number, because the mean of its divisors is an integer number (101014578).

Almost surely, 2^985809994 is an apocalyptic number.

985809994 is a deficient number, since it is larger than the sum of its proper divisors (630423254).

985809994 is a wasteful number, since it uses less digits than its factorization.

985809994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565989.

The product of its (nonzero) digits is 8398080, while the sum is 61.

The square root of 985809994 is about 31397.6112785670. The cubic root of 985809994 is about 995.2474470218.

The spelling of 985809994 in words is "nine hundred eighty-five million, eight hundred nine thousand, nine hundred ninety-four".