485639 has 24 divisors (see below), whose sum is σ = 664848. Its totient is φ = 349440.

The previous prime is 485609. The next prime is 485647. The reversal of 485639 is 936584.

It is not a de Polignac number, because 485639 - 2⁸ = 485383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 485599 and 485608.

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 485639.

It is not an unprimeable number, because it can be changed into a prime (485609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9137 + ... + 9189.

It is an arithmetic number, because the mean of its divisors is an integer number (27702).

2⁴⁸⁵⁶³⁹ is an apocalyptic number.

485639 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

485639 is a deficient number, since it is larger than the sum of its proper divisors (179209).

485639 is a wasteful number, since it uses less digits than its factorization.

485639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 88 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 485639 is about 696.8780381100. The cubic root of 485639 is about 78.6027701804.

Multiplying 485639 by its sum of digits (35), we get a triangular number (16997365 = T₅₈₃₀).

The spelling of 485639 in words is "four hundred eighty-five thousand, six hundred thirty-nine".