4679639 has 2 divisors, whose sum is σ = 4679640. Its totient is φ = 4679638.

The previous prime is 4679629. The next prime is 4679651. The reversal of 4679639 is 9369764.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4679639 - 2⁸ = 4679383 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 4679639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4679629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2339819 + 2339820.

It is an arithmetic number, because the mean of its divisors is an integer number (2339820).

Almost surely, 2^4679639 is an apocalyptic number.

4679639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4679639 is an equidigital number, since it uses as much as digits as its factorization.

4679639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 44.

The square root of 4679639 is about 2163.2473275148. The cubic root of 4679639 is about 167.2646311761.

The spelling of 4679639 in words is "four million, six hundred seventy-nine thousand, six hundred thirty-nine".