985945980 has 48 divisors (see below), whose sum is σ = 2762401824. Its totient is φ = 262752000.

The previous prime is 985945969. The next prime is 985945997. The reversal of 985945980 is 89549589.

It is a self number, because there is not a number n which added to its sum of digits gives 985945980.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111730 + ... + 120230.

It is an arithmetic number, because the mean of its divisors is an integer number (57550038).

Almost surely, 2^985945980 is an apocalyptic number.

It is an amenable number.

985945980 is an abundant number, since it is smaller than the sum of its proper divisors (1776455844).

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

985945980 is a wasteful number, since it uses less digits than its factorization.

985945980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10446 (or 10444 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 57.

The square root of 985945980 is about 31399.7767507987. The cubic root of 985945980 is about 995.2932075292.

The spelling of 985945980 in words is "nine hundred eighty-five million, nine hundred forty-five thousand, nine hundred eighty".