2099660139 has 12 divisors (see below), whose sum is σ = 3056724736. Its totient is φ = 1388750832.

The previous prime is 2099660131. The next prime is 2099660149. The reversal of 2099660139 is 9310669902.

It is a happy number.

2099660139 is a `hidden beast` number, since 2 + 0 + 9 + 9 + 6 + 601 + 39 = 666.

It is not a de Polignac number, because 2099660139 - 2³ = 2099660131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2099660094 and 2099660103.

It is not an unprimeable number, because it can be changed into a prime (2099660131) 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 11 ways as a sum of consecutive naturals, for example, 917344 + ... + 919629.

Almost surely, 2^2099660139 is an apocalyptic number.

2099660139 is a deficient number, since it is larger than the sum of its proper divisors (957064597).

2099660139 is a wasteful number, since it uses less digits than its factorization.

2099660139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837106 (or 1837103 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 2099660139 is about 45822.0486119946. The cubic root of 2099660139 is about 1280.5100788929.

The spelling of 2099660139 in words is "two billion, ninety-nine million, six hundred sixty thousand, one hundred thirty-nine".