985609520 has 60 divisors (see below), whose sum is σ = 2665682064. Its totient is φ = 337921920.

The previous prime is 985609517. The next prime is 985609529. The reversal of 985609520 is 25906589.

It is a super-2 number, since 2×985609520² = 1942852251829260800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (985609529) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 121796 + ... + 129635.

Almost surely, 2^985609520 is an apocalyptic number.

It is an amenable number.

985609520 is an abundant number, since it is smaller than the sum of its proper divisors (1680072544).

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

985609520 is a wasteful number, since it uses less digits than its factorization.

985609520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251458 (or 251445 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 985609520 is about 31394.4186122311. The cubic root of 985609520 is about 995.1799780490.

The spelling of 985609520 in words is "nine hundred eighty-five million, six hundred nine thousand, five hundred twenty".