492988221 has 16 divisors (see below), whose sum is σ = 796749120. Its totient is φ = 298780560.

The previous prime is 492988183. The next prime is 492988229. The reversal of 492988221 is 122889294.

It is a happy number.

It is not a de Polignac number, because 492988221 - 2¹⁰ = 492987197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492988229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829650 + ... + 830243.

It is an arithmetic number, because the mean of its divisors is an integer number (49796820).

Almost surely, 2^492988221 is an apocalyptic number.

It is an amenable number.

492988221 is a deficient number, since it is larger than the sum of its proper divisors (303760899).

492988221 is a wasteful number, since it uses less digits than its factorization.

492988221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659913 (or 1659907 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 492988221 is about 22203.3380598504. The cubic root of 492988221 is about 789.9728778810.

The spelling of 492988221 in words is "four hundred ninety-two million, nine hundred eighty-eight thousand, two hundred twenty-one".