2044139 has 8 divisors (see below), whose sum is σ = 2124048. Its totient is φ = 1965600.

The previous prime is 2044129. The next prime is 2044151. The reversal of 2044139 is 9314402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2044139 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2044129) 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 7 ways as a sum of consecutive naturals, for example, 3464 + ... + 4010.

It is an arithmetic number, because the mean of its divisors is an integer number (265506).

2^2044139 is an apocalyptic number.

2044139 is a deficient number, since it is larger than the sum of its proper divisors (79909).

2044139 is a wasteful number, since it uses less digits than its factorization.

2044139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2044139 is about 1429.7338913238. The cubic root of 2044139 is about 126.9122298470.

The spelling of 2044139 in words is "two million, forty-four thousand, one hundred thirty-nine".