492238321 has 4 divisors (see below), whose sum is σ = 495258352. Its totient is φ = 489218292.

The previous prime is 492238319. The next prime is 492238361. The reversal of 492238321 is 123832294.

It is a happy number.

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: 123832294 = 2 ⋅61916147.

It is a cyclic number.

It is not a de Polignac number, because 492238321 - 2¹ = 492238319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (492238361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1509771 + ... + 1510096.

It is an arithmetic number, because the mean of its divisors is an integer number (123814588).

Almost surely, 2^492238321 is an apocalyptic number.

It is an amenable number.

492238321 is a deficient number, since it is larger than the sum of its proper divisors (3020031).

492238321 is a wasteful number, since it uses less digits than its factorization.

492238321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020030.

The product of its digits is 20736, while the sum is 34.

The square root of 492238321 is about 22186.4445326420. Note that the first 3 decimals coincide. The cubic root of 492238321 is about 789.5721236891.

The spelling of 492238321 in words is "four hundred ninety-two million, two hundred thirty-eight thousand, three hundred twenty-one".