2499823 has 4 divisors (see below), whose sum is σ = 2514960. Its totient is φ = 2484688.

The previous prime is 2499821. The next prime is 2499853. The reversal of 2499823 is 3289942.

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 2499823 - 2¹ = 2499821 is a prime.

It is a Duffinian number.

2499823 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499821) 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, 7318 + ... + 7651.

It is an arithmetic number, because the mean of its divisors is an integer number (628740).

2^2499823 is an apocalyptic number.

2499823 is a deficient number, since it is larger than the sum of its proper divisors (15137).

2499823 is a wasteful number, since it uses less digits than its factorization.

2499823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15136.

The product of its digits is 31104, while the sum is 37.

The square root of 2499823 is about 1581.0828567789. The cubic root of 2499823 is about 135.7176777414.

The spelling of 2499823 in words is "two million, four hundred ninety-nine thousand, eight hundred twenty-three".