2103999 has 8 divisors (see below), whose sum is σ = 2853120. Its totient is φ = 1378776.

The previous prime is 2103989. The next prime is 2104013. The reversal of 2103999 is 9993012.

2103999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2103999 - 2⁸ = 2103743 is a prime.

2103999 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5767 + ... + 6120.

It is an arithmetic number, because the mean of its divisors is an integer number (356640).

2^2103999 is an apocalyptic number.

2103999 is a deficient number, since it is larger than the sum of its proper divisors (749121).

2103999 is a wasteful number, since it uses less digits than its factorization.

2103999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11949.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 2103999 is about 1450.5168044528. The cubic root of 2103999 is about 128.1391512428.

The spelling of 2103999 in words is "two million, one hundred three thousand, nine hundred ninety-nine".