2499239 has 4 divisors (see below), whose sum is σ = 2566824. Its totient is φ = 2431656.

The previous prime is 2499197. The next prime is 2499247. The reversal of 2499239 is 9329942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9329942 = 2 ⋅4664971.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2499239 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499269) 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, 33737 + ... + 33810.

It is an arithmetic number, because the mean of its divisors is an integer number (641706).

2^2499239 is an apocalyptic number.

2499239 is a deficient number, since it is larger than the sum of its proper divisors (67585).

2499239 is an equidigital number, since it uses as much as digits as its factorization.

2499239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67584.

The product of its digits is 34992, while the sum is 38.

The square root of 2499239 is about 1580.8981624380. The cubic root of 2499239 is about 135.7071082868.

The spelling of 2499239 in words is "two million, four hundred ninety-nine thousand, two hundred thirty-nine".