2103939 has 12 divisors (see below), whose sum is σ = 3137472. Its totient is φ = 1357200.

The previous prime is 2103919. The next prime is 2103953. The reversal of 2103939 is 9393012.

It is not a de Polignac number, because 2103939 - 2⁷ = 2103811 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

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 (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3492 + ... + 4049.

It is an arithmetic number, because the mean of its divisors is an integer number (261456).

2^2103939 is an apocalyptic number.

2103939 is a deficient number, since it is larger than the sum of its proper divisors (1033533).

2103939 is a wasteful number, since it uses less digits than its factorization.

2103939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7578 (or 7575 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 2103939 is about 1450.4961220217. The cubic root of 2103939 is about 128.1379331779.

The spelling of 2103939 in words is "two million, one hundred three thousand, nine hundred thirty-nine".