2099129 has 2 divisors, whose sum is σ = 2099130. Its totient is φ = 2099128.

The previous prime is 2099093. The next prime is 2099147. The reversal of 2099129 is 9219902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1960000 + 139129 = 1400^2 + 373^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2099129 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2099095 and 2099104.

It is not a weakly prime, because it can be changed into another prime (2099179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049564 + 1049565.

It is an arithmetic number, because the mean of its divisors is an integer number (1049565).

2^2099129 is an apocalyptic number.

It is an amenable number.

2099129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2099129 is an equidigital number, since it uses as much as digits as its factorization.

2099129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 2099129 is about 1448.8371199000. The cubic root of 2099129 is about 128.0402095353.

The spelling of 2099129 in words is "two million, ninety-nine thousand, one hundred twenty-nine".