8639410842 has 12 divisors (see below), whose sum is σ = 18718723530. Its totient is φ = 2879803608.

The previous prime is 8639410837. The next prime is 8639410859. The reversal of 8639410842 is 2480149368.

It is a happy number.

8639410842 is a `hidden beast` number, since 8 + 639 + 4 + 1 + 0 + 8 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8392575321 + 246835521 = 91611^2 + 15711^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 239983617 + ... + 239983652.

Almost surely, 2^8639410842 is an apocalyptic number.

8639410842 is an abundant number, since it is smaller than the sum of its proper divisors (10079312688).

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

8639410842 is a wasteful number, since it uses less digits than its factorization.

8639410842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479967277 (or 479967274 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 8639410842 is about 92948.4310895025. The cubic root of 8639410842 is about 2051.9244939329.

The spelling of 8639410842 in words is "eight billion, six hundred thirty-nine million, four hundred ten thousand, eight hundred forty-two".