492490591 has 4 divisors (see below), whose sum is σ = 492535384. Its totient is φ = 492445800.

The previous prime is 492490571. The next prime is 492490619. The reversal of 492490591 is 195094294.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 492490591 - 2⁷ = 492490463 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 (492490501) 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, 6676 + ... + 32086.

It is an arithmetic number, because the mean of its divisors is an integer number (123133846).

Almost surely, 2^492490591 is an apocalyptic number.

492490591 is a deficient number, since it is larger than the sum of its proper divisors (44793).

492490591 is a wasteful number, since it uses less digits than its factorization.

492490591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44792.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 492490591 is about 22192.1290326097. The cubic root of 492490591 is about 789.7069847470.

The spelling of 492490591 in words is "four hundred ninety-two million, four hundred ninety thousand, five hundred ninety-one".