539198985 has 16 divisors (see below), whose sum is σ = 929081664. Its totient is φ = 265451712.

The previous prime is 539198981. The next prime is 539198987. The reversal of 539198985 is 589891935.

It is not a de Polignac number, because 539198985 - 2² = 539198981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (539198981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1382367 + ... + 1382756.

It is an arithmetic number, because the mean of its divisors is an integer number (58067604).

Almost surely, 2^539198985 is an apocalyptic number.

It is an amenable number.

539198985 is a deficient number, since it is larger than the sum of its proper divisors (389882679).

539198985 is a wasteful number, since it uses less digits than its factorization.

539198985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765144.

The product of its digits is 3499200, while the sum is 57.

The square root of 539198985 is about 23220.6585823917. The cubic root of 539198985 is about 813.9224395712.

The spelling of 539198985 in words is "five hundred thirty-nine million, one hundred ninety-eight thousand, nine hundred eighty-five".