9879588749 has 2 divisors, whose sum is σ = 9879588750. Its totient is φ = 9879588748.

The previous prime is 9879588689. The next prime is 9879588767. The reversal of 9879588749 is 9478859789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6954726025 + 2924862724 = 83395^2 + 54082^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9879588749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9879588779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4939794374 + 4939794375.

It is an arithmetic number, because the mean of its divisors is an integer number (4939794375).

Almost surely, 2^9879588749 is an apocalyptic number.

It is an amenable number.

9879588749 is a deficient number, since it is larger than the sum of its proper divisors (1).

9879588749 is an equidigital number, since it uses as much as digits as its factorization.

9879588749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 365783040, while the sum is 74.

The square root of 9879588749 is about 99396.1203920958. The cubic root of 9879588749 is about 2145.7524758033.

The spelling of 9879588749 in words is "nine billion, eight hundred seventy-nine million, five hundred eighty-eight thousand, seven hundred forty-nine".