492689 has 4 divisors (see below), whose sum is σ = 518640. Its totient is φ = 466740.

The previous prime is 492673. The next prime is 492707. The reversal of 492689 is 986294.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 986294 = 2 ⋅493147.

It is a cyclic number.

It is not a de Polignac number, because 492689 - 2⁴ = 492673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (492619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12947 + ... + 12984.

It is an arithmetic number, because the mean of its divisors is an integer number (129660).

2⁴⁹²⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

492689 is a deficient number, since it is larger than the sum of its proper divisors (25951).

492689 is a wasteful number, since it uses less digits than its factorization.

492689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25950.

The product of its digits is 31104, while the sum is 38.

The square root of 492689 is about 701.9180863890. The cubic root of 492689 is about 78.9813019894.

The spelling of 492689 in words is "four hundred ninety-two thousand, six hundred eighty-nine".