2618239 has 4 divisors (see below), whose sum is σ = 2819656. Its totient is φ = 2416824.

The previous prime is 2618237. The next prime is 2618249. The reversal of 2618239 is 9328162.

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 2618239 - 2¹ = 2618237 is a prime.

It is a super-2 number, since 2×2618239² = 13710350922242, which contains 22 as substring.

It is a Duffinian number.

2618239 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2618239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2618237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100689 + ... + 100714.

It is an arithmetic number, because the mean of its divisors is an integer number (704914).

2^2618239 is an apocalyptic number.

2618239 is a deficient number, since it is larger than the sum of its proper divisors (201417).

2618239 is a wasteful number, since it uses less digits than its factorization.

2618239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201416.

The product of its digits is 5184, while the sum is 31.

The square root of 2618239 is about 1618.0973394700. The cubic root of 2618239 is about 137.8276747002.

The spelling of 2618239 in words is "two million, six hundred eighteen thousand, two hundred thirty-nine".