2099659 has 2 divisors, whose sum is σ = 2099660. Its totient is φ = 2099658.

The previous prime is 2099641. The next prime is 2099677. The reversal of 2099659 is 9569902.

It is a balanced prime because it is at equal distance from previous prime (2099641) and next prime (2099677).

It is a cyclic number.

It is not a de Polignac number, because 2099659 - 2⁵ = 2099627 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2099059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049829 + 1049830.

It is an arithmetic number, because the mean of its divisors is an integer number (1049830).

2^2099659 is an apocalyptic number.

2099659 is a deficient number, since it is larger than the sum of its proper divisors (1).

2099659 is an equidigital number, since it uses as much as digits as its factorization.

2099659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 2099659 is about 1449.0200136644. The cubic root of 2099659 is about 128.0509847347.

The spelling of 2099659 in words is "two million, ninety-nine thousand, six hundred fifty-nine".