2049389 has 4 divisors (see below), whose sum is σ = 2054556. Its totient is φ = 2044224.

The previous prime is 2049361. The next prime is 2049407. The reversal of 2049389 is 9839402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9839402 = 2 ⋅4919701.

It can be written as a sum of positive squares in 2 ways, for example, as 293764 + 1755625 = 542^2 + 1325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2049389 - 2¹⁶ = 1983853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2049349) 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 3 ways as a sum of consecutive naturals, for example, 1934 + ... + 2799.

It is an arithmetic number, because the mean of its divisors is an integer number (513639).

2^2049389 is an apocalyptic number.

It is an amenable number.

2049389 is a deficient number, since it is larger than the sum of its proper divisors (5167).

2049389 is an equidigital number, since it uses as much as digits as its factorization.

2049389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 2049389 is about 1431.5687199712. The cubic root of 2049389 is about 127.0207873056.

The spelling of 2049389 in words is "two million, forty-nine thousand, three hundred eighty-nine".