2139903 has 6 divisors (see below), whose sum is σ = 3090984. Its totient is φ = 1426596.

The previous prime is 2139877. The next prime is 2139911. The reversal of 2139903 is 3099312.

It is not a de Polignac number, because 2139903 - 2¹⁰ = 2138879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118875 + ... + 118892.

It is an arithmetic number, because the mean of its divisors is an integer number (515164).

2^2139903 is an apocalyptic number.

2139903 is a deficient number, since it is larger than the sum of its proper divisors (951081).

2139903 is a wasteful number, since it uses less digits than its factorization.

2139903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237773 (or 237770 counting only the distinct ones).

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

The square root of 2139903 is about 1462.8407295396. The cubic root of 2139903 is about 128.8639271859.

The spelling of 2139903 in words is "two million, one hundred thirty-nine thousand, nine hundred three".