492639 has 8 divisors (see below), whose sum is σ = 750720. Its totient is φ = 281496.

The previous prime is 492631. The next prime is 492641. The reversal of 492639 is 936294.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 492639 - 2³ = 492631 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 492639.

It is not an unprimeable number, because it can be changed into a prime (492631) 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 7 ways as a sum of consecutive naturals, for example, 11709 + ... + 11750.

It is an arithmetic number, because the mean of its divisors is an integer number (93840).

2⁴⁹²⁶³⁹ is an apocalyptic number.

492639 is a deficient number, since it is larger than the sum of its proper divisors (258081).

492639 is a wasteful number, since it uses less digits than its factorization.

492639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23469.

The product of its digits is 11664, while the sum is 33.

The square root of 492639 is about 701.8824687937. The cubic root of 492639 is about 78.9786301222.

The spelling of 492639 in words is "four hundred ninety-two thousand, six hundred thirty-nine".