2139893 has 8 divisors (see below), whose sum is σ = 2469312. Its totient is φ = 1816416.

The previous prime is 2139877. The next prime is 2139911. The reversal of 2139893 is 3989312.

2139893 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 2139893 - 2⁴ = 2139877 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 (2139493) 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, 680 + ... + 2177.

It is an arithmetic number, because the mean of its divisors is an integer number (308664).

2^2139893 is an apocalyptic number.

It is an amenable number.

2139893 is a deficient number, since it is larger than the sum of its proper divisors (329419).

2139893 is a wasteful number, since it uses less digits than its factorization.

2139893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971.

The product of its digits is 11664, while the sum is 35.

The square root of 2139893 is about 1462.8373115285. The cubic root of 2139893 is about 128.8637264538.

The spelling of 2139893 in words is "two million, one hundred thirty-nine thousand, eight hundred ninety-three".