2099659901 has 2 divisors, whose sum is σ = 2099659902. Its totient is φ = 2099659900.

The previous prime is 2099659883. The next prime is 2099659909. The reversal of 2099659901 is 1099569902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1894425625 + 205234276 = 43525^2 + 14326^2 .

It is a cyclic number.

It is not a de Polignac number, because 2099659901 - 2³⁰ = 1025918077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2099659901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2099659909) 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, 1049829950 + 1049829951.

It is an arithmetic number, because the mean of its divisors is an integer number (1049829951).

Almost surely, 2^2099659901 is an apocalyptic number.

It is an amenable number.

2099659901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2099659901 is an equidigital number, since it uses as much as digits as its factorization.

2099659901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 393660, while the sum is 50.

The square root of 2099659901 is about 45822.0460149915. The cubic root of 2099659901 is about 1280.5100305102.

The spelling of 2099659901 in words is "two billion, ninety-nine million, six hundred fifty-nine thousand, nine hundred one".