2099399 has 4 divisors (see below), whose sum is σ = 2129040. Its totient is φ = 2069760.

The previous prime is 2099393. The next prime is 2099411. The reversal of 2099399 is 9939902.

2099399 = T₉₆ + T₉₇ + ... + T₂₃₇.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2099399 is a prime.

It is a super-2 number, since 2×2099399² = 8814952322402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2099393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14714 + ... + 14855.

It is an arithmetic number, because the mean of its divisors is an integer number (532260).

2^2099399 is an apocalyptic number.

2099399 is a deficient number, since it is larger than the sum of its proper divisors (29641).

2099399 is an equidigital number, since it uses as much as digits as its factorization.

2099399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29640.

The product of its (nonzero) digits is 39366, while the sum is 41.

The square root of 2099399 is about 1448.9302950798. The cubic root of 2099399 is about 128.0456990145.

The spelling of 2099399 in words is "two million, ninety-nine thousand, three hundred ninety-nine".