4868639 has 4 divisors (see below), whose sum is σ = 4883424. Its totient is φ = 4853856.

The previous prime is 4868623. The next prime is 4868651. The reversal of 4868639 is 9368684.

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 4868639 - 2⁴ = 4868623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4868639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4868609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6887 + ... + 7560.

It is an arithmetic number, because the mean of its divisors is an integer number (1220856).

Almost surely, 2^4868639 is an apocalyptic number.

4868639 is a deficient number, since it is larger than the sum of its proper divisors (14785).

4868639 is a wasteful number, since it uses less digits than its factorization.

4868639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14784.

The product of its digits is 248832, while the sum is 44.

The square root of 4868639 is about 2206.4992635394. The cubic root of 4868639 is about 169.4867913469.

The spelling of 4868639 in words is "four million, eight hundred sixty-eight thousand, six hundred thirty-nine".