2009838 has 8 divisors (see below), whose sum is σ = 4019688. Its totient is φ = 669944.

The previous prime is 2009831. The next prime is 2009857. The reversal of 2009838 is 8389002.

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

2009838 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167481 + ... + 167492.

It is an arithmetic number, because the mean of its divisors is an integer number (502461).

2^2009838 is an apocalyptic number.

2009838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2009838 is a wasteful number, since it uses less digits than its factorization.

2009838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334978.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 2009838 is about 1417.6875537297. The cubic root of 2009838 is about 126.1983522363.

The spelling of 2009838 in words is "two million, nine thousand, eight hundred thirty-eight".