490221 has 6 divisors (see below), whose sum is σ = 708110. Its totient is φ = 326808.

The previous prime is 490207. The next prime is 490223. The reversal of 490221 is 122094.

It can be written as a sum of positive squares in only one way, i.e., 455625 + 34596 = 675^2 + 186^2 .

It is not a de Polignac number, because 490221 - 2¹⁰ = 489197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 490194 and 490203.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 490221.

It is not an unprimeable number, because it can be changed into a prime (490223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27226 + ... + 27243.

2⁴⁹⁰²²¹ is an apocalyptic number.

It is an amenable number.

490221 is a deficient number, since it is larger than the sum of its proper divisors (217889).

490221 is a wasteful number, since it uses less digits than its factorization.

490221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54475 (or 54472 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 490221 is about 700.1578393477. The cubic root of 490221 is about 78.8492022678.

The spelling of 490221 in words is "four hundred ninety thousand, two hundred twenty-one".