9839872373 has 2 divisors, whose sum is σ = 9839872374. Its totient is φ = 9839872372.

The previous prime is 9839872369. The next prime is 9839872387. The reversal of 9839872373 is 3732789389.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9462036529 + 377835844 = 97273^2 + 19438^2 .

It is a cyclic number.

It is not a de Polignac number, because 9839872373 - 2² = 9839872369 is a prime.

It is a super-2 number, since 2×9839872373² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9839872303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4919936186 + 4919936187.

It is an arithmetic number, because the mean of its divisors is an integer number (4919936187).

Almost surely, 2^9839872373 is an apocalyptic number.

It is an amenable number.

9839872373 is a deficient number, since it is larger than the sum of its proper divisors (1).

9839872373 is an equidigital number, since it uses as much as digits as its factorization.

9839872373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 59.

The square root of 9839872373 is about 99196.1308368426. The cubic root of 9839872373 is about 2142.8732747863.

The spelling of 9839872373 in words is "nine billion, eight hundred thirty-nine million, eight hundred seventy-two thousand, three hundred seventy-three".