2099009 has 8 divisors (see below), whose sum is σ = 2305152. Its totient is φ = 1895440.

The previous prime is 2098981. The next prime is 2099017. The reversal of 2099009 is 9009902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2099009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2099059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352 + ... + 2454.

It is an arithmetic number, because the mean of its divisors is an integer number (288144).

2^2099009 is an apocalyptic number.

It is an amenable number.

2099009 is a deficient number, since it is larger than the sum of its proper divisors (206143).

2099009 is a wasteful number, since it uses less digits than its factorization.

2099009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 2099009 is about 1448.7957067855. The cubic root of 2099009 is about 128.0377696157.

It can be divided in two parts, 209 and 9009, that multiplied together give a palindrome (1882881).

The spelling of 2099009 in words is "two million, ninety-nine thousand, nine".