490020221 has 8 divisors (see below), whose sum is σ = 528958080. Its totient is φ = 452551792.

The previous prime is 490020169. The next prime is 490020247. The reversal of 490020221 is 122020094.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 490020221 - 2¹⁰ = 490019197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 490020193 and 490020202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490020521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366665 + ... + 367998.

It is an arithmetic number, because the mean of its divisors is an integer number (66119760).

Almost surely, 2^490020221 is an apocalyptic number.

It is an amenable number.

490020221 is a deficient number, since it is larger than the sum of its proper divisors (38937859).

490020221 is a wasteful number, since it uses less digits than its factorization.

490020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734715.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 490020221 is about 22136.4003622992. The cubic root of 490020221 is about 788.3843608558.

The spelling of 490020221 in words is "four hundred ninety million, twenty thousand, two hundred twenty-one".