492959221 has 2 divisors, whose sum is σ = 492959222. Its totient is φ = 492959220.

The previous prime is 492959189. The next prime is 492959227. The reversal of 492959221 is 122959294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 492174225 + 784996 = 22185^2 + 886^2 .

It is a cyclic number.

It is not a de Polignac number, because 492959221 - 2⁵ = 492959189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (492959227) 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 as a sum of consecutive naturals, namely, 246479610 + 246479611.

It is an arithmetic number, because the mean of its divisors is an integer number (246479611).

Almost surely, 2^492959221 is an apocalyptic number.

It is an amenable number.

492959221 is a deficient number, since it is larger than the sum of its proper divisors (1).

492959221 is an equidigital number, since it uses as much as digits as its factorization.

492959221 is an odious number, because the sum of its binary digits is odd.

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

The square root of 492959221 is about 22202.6849952883. The cubic root of 492959221 is about 789.9573875429.

The spelling of 492959221 in words is "four hundred ninety-two million, nine hundred fifty-nine thousand, two hundred twenty-one".