2149839 has 12 divisors (see below), whose sum is σ = 3164616. Its totient is φ = 1405872.

The previous prime is 2149813. The next prime is 2149853. The reversal of 2149839 is 9389412.

It is not a de Polignac number, because 2149839 - 2⁷ = 2149711 is a prime.

It is a super-4 number, since 4×2149839⁴ (a number of 26 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1777 + ... + 2730.

It is an arithmetic number, because the mean of its divisors is an integer number (263718).

2^2149839 is an apocalyptic number.

2149839 is a deficient number, since it is larger than the sum of its proper divisors (1014777).

2149839 is a wasteful number, since it uses less digits than its factorization.

2149839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4566 (or 4563 counting only the distinct ones).

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

The square root of 2149839 is about 1466.2329282894. The cubic root of 2149839 is about 129.0630663324.

The spelling of 2149839 in words is "two million, one hundred forty-nine thousand, eight hundred thirty-nine".