986539842 has 12 divisors (see below), whose sum is σ = 2137503030. Its totient is φ = 328846608.

The previous prime is 986539837. The next prime is 986539849. The reversal of 986539842 is 248935689.

It can be written as a sum of positive squares in only one way, i.e., 696484881 + 290054961 = 26391^2 + 17031^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (986539849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27403867 + ... + 27403902.

Almost surely, 2^986539842 is an apocalyptic number.

986539842 is an abundant number, since it is smaller than the sum of its proper divisors (1150963188).

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

986539842 is a wasteful number, since it uses less digits than its factorization.

986539842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54807777 (or 54807774 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 986539842 is about 31409.2317957635. The cubic root of 986539842 is about 995.4929981177.

The spelling of 986539842 in words is "nine hundred eighty-six million, five hundred thirty-nine thousand, eight hundred forty-two".