2838921 has 4 divisors (see below), whose sum is σ = 3785232. Its totient is φ = 1892612.

The previous prime is 2838919. The next prime is 2838931. The reversal of 2838921 is 1298382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2838921 - 2¹ = 2838919 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2838911) 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, 473151 + ... + 473156.

It is an arithmetic number, because the mean of its divisors is an integer number (946308).

2^2838921 is an apocalyptic number.

It is an amenable number.

2838921 is a deficient number, since it is larger than the sum of its proper divisors (946311).

2838921 is an equidigital number, since it uses as much as digits as its factorization.

2838921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946310.

The product of its digits is 6912, while the sum is 33.

The square root of 2838921 is about 1684.9097898701. The cubic root of 2838921 is about 141.5960383040.

The spelling of 2838921 in words is "two million, eight hundred thirty-eight thousand, nine hundred twenty-one".