9872113 has 2 divisors, whose sum is σ = 9872114. Its totient is φ = 9872112.

The previous prime is 9872111. The next prime is 9872117. The reversal of 9872113 is 3112789.

9872113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8254129 + 1617984 = 2873^2 + 1272^2 .

It is a cyclic number.

It is not a de Polignac number, because 9872113 - 2¹ = 9872111 is a prime.

Together with 9872111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9872111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4936056 + 4936057.

It is an arithmetic number, because the mean of its divisors is an integer number (4936057).

Almost surely, 2^9872113 is an apocalyptic number.

It is an amenable number.

9872113 is a deficient number, since it is larger than the sum of its proper divisors (1).

9872113 is an equidigital number, since it uses as much as digits as its factorization.

9872113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 31.

The square root of 9872113 is about 3141.9918841397. The cubic root of 9872113 is about 214.5211118767.

The spelling of 9872113 in words is "nine million, eight hundred seventy-two thousand, one hundred thirteen".