2049939 has 12 divisors (see below), whose sum is σ = 3030456. Its totient is φ = 1334592.

The previous prime is 2049919. The next prime is 2049941. The reversal of 2049939 is 9399402.

It is not a de Polignac number, because 2049939 - 2⁹ = 2049427 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2049919) 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 11 ways as a sum of consecutive naturals, for example, 2262 + ... + 3035.

It is an arithmetic number, because the mean of its divisors is an integer number (252538).

2^2049939 is an apocalyptic number.

2049939 is a deficient number, since it is larger than the sum of its proper divisors (980517).

2049939 is a wasteful number, since it uses less digits than its factorization.

2049939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5346 (or 5343 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 2049939 is about 1431.7608040451. The cubic root of 2049939 is about 127.0321492586.

The spelling of 2049939 in words is "two million, forty-nine thousand, nine hundred thirty-nine".