9872790289 has 2 divisors, whose sum is σ = 9872790290. Its totient is φ = 9872790288.

The previous prime is 9872790199. The next prime is 9872790313. The reversal of 9872790289 is 9820972789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9872409600 + 380689 = 99360^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 9872790289 - 2¹¹ = 9872788241 is a prime.

It is not a weakly prime, because it can be changed into another prime (9870790289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4936395144 + 4936395145.

It is an arithmetic number, because the mean of its divisors is an integer number (4936395145).

Almost surely, 2^9872790289 is an apocalyptic number.

It is an amenable number.

9872790289 is a deficient number, since it is larger than the sum of its proper divisors (1).

9872790289 is an equidigital number, since it uses as much as digits as its factorization.

9872790289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The square root of 9872790289 is about 99361.9156870478. The cubic root of 9872790289 is about 2145.2601759671.

The spelling of 9872790289 in words is "nine billion, eight hundred seventy-two million, seven hundred ninety thousand, two hundred eighty-nine".