477639 has 12 divisors (see below), whose sum is σ = 700336. Its totient is φ = 313632.

The previous prime is 477637. The next prime is 477671. The reversal of 477639 is 936774.

477639 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 477639 - 2¹ = 477637 is a prime.

It is a Duffinian number.

477639 is strictly pandigital in base 7.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 477639.

It is not an unprimeable number, because it can be changed into a prime (477637) 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 11 ways as a sum of consecutive naturals, for example, 294 + ... + 1020.

2⁴⁷⁷⁶³⁹ is an apocalyptic number.

477639 is a deficient number, since it is larger than the sum of its proper divisors (222697).

477639 is a wasteful number, since it uses less digits than its factorization.

477639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806 (or 803 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 477639 is about 691.1143176060. The cubic root of 477639 is about 78.1687667300.

The spelling of 477639 in words is "four hundred seventy-seven thousand, six hundred thirty-nine".