492369391 has 4 divisors (see below), whose sum is σ = 492821784. Its totient is φ = 491917000.

The previous prime is 492369329. The next prime is 492369421. The reversal of 492369391 is 193963294.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 492369391 - 2¹⁷ = 492238319 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 (492369301) 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, 224560 + ... + 226741.

It is an arithmetic number, because the mean of its divisors is an integer number (123205446).

Almost surely, 2^492369391 is an apocalyptic number.

492369391 is a deficient number, since it is larger than the sum of its proper divisors (452393).

492369391 is a wasteful number, since it uses less digits than its factorization.

492369391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452392.

The product of its digits is 314928, while the sum is 46.

The square root of 492369391 is about 22189.3981666921. The cubic root of 492369391 is about 789.6421981698.

The spelling of 492369391 in words is "four hundred ninety-two million, three hundred sixty-nine thousand, three hundred ninety-one".