2099659887 has 60 divisors (see below), whose sum is σ = 3420827784. Its totient is φ = 1282806720.

The previous prime is 2099659883. The next prime is 2099659901. The reversal of 2099659887 is 7889569902.

It is not a de Polignac number, because 2099659887 - 2² = 2099659883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2099659883) 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 in 59 ways as a sum of consecutive naturals, for example, 2230837 + ... + 2231777.

Almost surely, 2^2099659887 is an apocalyptic number.

2099659887 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2099659887 is a deficient number, since it is larger than the sum of its proper divisors (1321167897).

2099659887 is a wasteful number, since it uses less digits than its factorization.

2099659887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 63.

The square root of 2099659887 is about 45822.0458622266. The cubic root of 2099659887 is about 1280.5100276642.

The spelling of 2099659887 in words is "two billion, ninety-nine million, six hundred fifty-nine thousand, eight hundred eighty-seven".