2823391 has 4 divisors (see below), whose sum is σ = 2836984. Its totient is φ = 2809800.

The previous prime is 2823389. The next prime is 2823407. The reversal of 2823391 is 1933282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2823391 - 2¹ = 2823389 is a prime.

It is a Duffinian number.

2823391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2823311) 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 3 ways as a sum of consecutive naturals, for example, 6480 + ... + 6901.

It is an arithmetic number, because the mean of its divisors is an integer number (709246).

2^2823391 is an apocalyptic number.

2823391 is a deficient number, since it is larger than the sum of its proper divisors (13593).

2823391 is a wasteful number, since it uses less digits than its factorization.

2823391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13592.

The product of its digits is 2592, while the sum is 28.

The square root of 2823391 is about 1680.2949145909. The cubic root of 2823391 is about 141.3373709588.

The spelling of 2823391 in words is "two million, eight hundred twenty-three thousand, three hundred ninety-one".