2081939 has 16 divisors (see below), whose sum is σ = 2358720. Its totient is φ = 1827840.

The previous prime is 2081927. The next prime is 2081969. The reversal of 2081939 is 9391802.

It is not a de Polignac number, because 2081939 - 2⁴ = 2081923 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20162 + ... + 20264.

It is an arithmetic number, because the mean of its divisors is an integer number (147420).

2^2081939 is an apocalyptic number.

2081939 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2081939 is a deficient number, since it is larger than the sum of its proper divisors (276781).

2081939 is a wasteful number, since it uses less digits than its factorization.

2081939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2081939 is about 1442.8925808944. The cubic root of 2081939 is about 127.6897392857.

The spelling of 2081939 in words is "two million, eighty-one thousand, nine hundred thirty-nine".