4857239 has 4 divisors (see below), whose sum is σ = 5024760. Its totient is φ = 4689720.

The previous prime is 4857233. The next prime is 4857253. The reversal of 4857239 is 9327584.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4857239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4857233) 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, 83717 + ... + 83774.

It is an arithmetic number, because the mean of its divisors is an integer number (1256190).

Almost surely, 2^4857239 is an apocalyptic number.

4857239 is a deficient number, since it is larger than the sum of its proper divisors (167521).

4857239 is a wasteful number, since it uses less digits than its factorization.

4857239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167520.

The product of its digits is 60480, while the sum is 38.

The square root of 4857239 is about 2203.9144720247. The cubic root of 4857239 is about 169.3544025733.

It can be divided in two parts, 48 and 57239, that multiplied together give a palindrome (2747472).

The spelling of 4857239 in words is "four million, eight hundred fifty-seven thousand, two hundred thirty-nine".