2699999989 has 2 divisors, whose sum is σ = 2699999990. Its totient is φ = 2699999988.

The previous prime is 2699999977. The next prime is 2700000007. The reversal of 2699999989 is 9899999962.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1987643889 + 712356100 = 44583^2 + 26690^2 .

It is a cyclic number.

It is not a de Polignac number, because 2699999989 - 2²³ = 2691611381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2699999189) 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, 1349999994 + 1349999995.

It is an arithmetic number, because the mean of its divisors is an integer number (1349999995).

Almost surely, 2^2699999989 is an apocalyptic number.

It is an amenable number.

2699999989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2699999989 is an equidigital number, since it uses as much as digits as its factorization.

2699999989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 459165024, while the sum is 79.

The square root of 2699999989 is about 51961.5241212188. The cubic root of 2699999989 is about 1392.4766481928.

The spelling of 2699999989 in words is "two billion, six hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-nine".