2184391 has 8 divisors (see below), whose sum is σ = 2394000. Its totient is φ = 1976640.

The previous prime is 2184389. The next prime is 2184397. The reversal of 2184391 is 1934812.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2184391 - 2¹ = 2184389 is a prime.

It is a Duffinian number.

2184391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2184397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3555 + ... + 4123.

It is an arithmetic number, because the mean of its divisors is an integer number (299250).

2^2184391 is an apocalyptic number.

2184391 is a deficient number, since it is larger than the sum of its proper divisors (209609).

2184391 is a wasteful number, since it uses less digits than its factorization.

2184391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929.

The product of its digits is 1728, while the sum is 28.

The square root of 2184391 is about 1477.9685382308. The cubic root of 2184391 is about 129.7508244769.

The spelling of 2184391 in words is "two million, one hundred eighty-four thousand, three hundred ninety-one".