2899864789 has 2 divisors, whose sum is σ = 2899864790. Its totient is φ = 2899864788.

The previous prime is 2899864763. The next prime is 2899864823. The reversal of 2899864789 is 9874689982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2888202564 + 11662225 = 53742^2 + 3415^2 .

It is a cyclic number.

It is not a de Polignac number, because 2899864789 - 2²⁷ = 2765647061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2899864739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1449932394 + 1449932395.

It is an arithmetic number, because the mean of its divisors is an integer number (1449932395).

Almost surely, 2^2899864789 is an apocalyptic number.

It is an amenable number.

2899864789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2899864789 is an equidigital number, since it uses as much as digits as its factorization.

2899864789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125411328, while the sum is 70.

The square root of 2899864789 is about 53850.3926540931. The cubic root of 2899864789 is about 1426.0209839566.

The spelling of 2899864789 in words is "two billion, eight hundred ninety-nine million, eight hundred sixty-four thousand, seven hundred eighty-nine".