9872840008 has 16 divisors (see below), whose sum is σ = 18539091180. Its totient is φ = 4929082368.

The previous prime is 9872839987. The next prime is 9872840009. The reversal of 9872840008 is 8000482789.

It can be written as a sum of positive squares in 2 ways, for example, as 9679017924 + 193822084 = 98382^2 + 13922^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9872840008.

It is not an unprimeable number, because it can be changed into a prime (9872840009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911485 + ... + 922252.

Almost surely, 2^9872840008 is an apocalyptic number.

It is an amenable number.

9872840008 is a deficient number, since it is larger than the sum of its proper divisors (8666251172).

9872840008 is a wasteful number, since it uses less digits than its factorization.

9872840008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834416 (or 1834412 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 9872840008 is about 99362.1658781651. The cubic root of 9872840008 is about 2145.2637771109.

The spelling of 9872840008 in words is "nine billion, eight hundred seventy-two million, eight hundred forty thousand, eight".