492491 has 2 divisors, whose sum is σ = 492492. Its totient is φ = 492490.

The previous prime is 492487. The next prime is 492511. The reversal of 492491 is 194294.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 492491 - 2² = 492487 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 492491.

It is not a weakly prime, because it can be changed into another prime (492421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246245 + 246246.

It is an arithmetic number, because the mean of its divisors is an integer number (246246).

2⁴⁹²⁴⁹¹ is an apocalyptic number.

492491 is a deficient number, since it is larger than the sum of its proper divisors (1).

492491 is an equidigital number, since it uses as much as digits as its factorization.

492491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 492491 is about 701.7770301171. Note that the first 3 decimals coincide. The cubic root of 492491 is about 78.9707203357.

The spelling of 492491 in words is "four hundred ninety-two thousand, four hundred ninety-one".