479639 has 2 divisors, whose sum is σ = 479640. Its totient is φ = 479638.

The previous prime is 479629. The next prime is 479701. The reversal of 479639 is 936974.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 479639 - 2⁴ = 479623 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479629) 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 as a sum of consecutive naturals, namely, 239819 + 239820.

It is an arithmetic number, because the mean of its divisors is an integer number (239820).

2⁴⁷⁹⁶³⁹ is an apocalyptic number.

479639 is a deficient number, since it is larger than the sum of its proper divisors (1).

479639 is an equidigital number, since it uses as much as digits as its factorization.

479639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 38.

The square root of 479639 is about 692.5597447152. The cubic root of 479639 is about 78.2777191891.

The spelling of 479639 in words is "four hundred seventy-nine thousand, six hundred thirty-nine".