492908639 has 8 divisors (see below), whose sum is σ = 502772832. Its totient is φ = 483065440.

The previous prime is 492908623. The next prime is 492908657. The reversal of 492908639 is 936809294.

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

It is a cyclic number.

It is not a de Polignac number, because 492908639 - 2⁴ = 492908623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492908939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47369 + ... + 56829.

It is an arithmetic number, because the mean of its divisors is an integer number (62846604).

Almost surely, 2^492908639 is an apocalyptic number.

492908639 is a deficient number, since it is larger than the sum of its proper divisors (9864193).

492908639 is an equidigital number, since it uses as much as digits as its factorization.

492908639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10497.

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 492908639 is about 22201.5458696011. The cubic root of 492908639 is about 789.9303677344.

The spelling of 492908639 in words is "four hundred ninety-two million, nine hundred eight thousand, six hundred thirty-nine".