2139894 has 24 divisors (see below), whose sum is σ = 4881240. Its totient is φ = 675648.

The previous prime is 2139877. The next prime is 2139911. The reversal of 2139894 is 4989312.

2139894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2139877) and next prime (2139911).

It is a d-powerful number, because it can be written as 2⁵ + 1 + 3⁹ + 9² + 8⁷ + 9⁴ + 4⁷ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2787 + ... + 3470.

It is an arithmetic number, because the mean of its divisors is an integer number (203385).

2^2139894 is an apocalyptic number.

2139894 is an abundant number, since it is smaller than the sum of its proper divisors (2741346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2139894 is a wasteful number, since it uses less digits than its factorization.

2139894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6284 (or 6281 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 2139894 is about 1462.8376533300. The cubic root of 2139894 is about 128.8637465271.

The spelling of 2139894 in words is "two million, one hundred thirty-nine thousand, eight hundred ninety-four".