2044939 has 4 divisors (see below), whose sum is σ = 2202256. Its totient is φ = 1887624.

The previous prime is 2044937. The next prime is 2044943. The reversal of 2044939 is 9394402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9394402 = 2 ⋅4697201.

It is a cyclic number.

It is not a de Polignac number, because 2044939 - 2¹ = 2044937 is a prime.

It is a Duffinian number.

2044939 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2044939.

It is not an unprimeable number, because it can be changed into a prime (2044937) 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 3 ways as a sum of consecutive naturals, for example, 78639 + ... + 78664.

It is an arithmetic number, because the mean of its divisors is an integer number (550564).

2^2044939 is an apocalyptic number.

2044939 is a deficient number, since it is larger than the sum of its proper divisors (157317).

2044939 is a wasteful number, since it uses less digits than its factorization.

2044939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157316.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 2044939 is about 1430.0136362986. The cubic root of 2044939 is about 126.9287839302.

The spelling of 2044939 in words is "two million, forty-four thousand, nine hundred thirty-nine".