2399823 has 6 divisors (see below), whose sum is σ = 3466424. Its totient is φ = 1599876.

The previous prime is 2399821. The next prime is 2399869. The reversal of 2399823 is 3289932.

It is not a de Polignac number, because 2399823 - 2¹ = 2399821 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2399821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133315 + ... + 133332.

2^2399823 is an apocalyptic number.

2399823 is a deficient number, since it is larger than the sum of its proper divisors (1066601).

2399823 is a wasteful number, since it uses less digits than its factorization.

2399823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266653 (or 266650 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 2399823 is about 1549.1362109253. The cubic root of 2399823 is about 133.8832985568.

The spelling of 2399823 in words is "two million, three hundred ninety-nine thousand, eight hundred twenty-three".