490972221 has 12 divisors (see below), whose sum is σ = 714767872. Its totient is φ = 324736776.

The previous prime is 490972219. The next prime is 490972249. The reversal of 490972221 is 122279094.

It is not a de Polignac number, because 490972221 - 2¹ = 490972219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490972201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213631 + ... + 215916.

Almost surely, 2^490972221 is an apocalyptic number.

It is an amenable number.

490972221 is a deficient number, since it is larger than the sum of its proper divisors (223795651).

490972221 is a wasteful number, since it uses less digits than its factorization.

490972221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429680 (or 429677 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 490972221 is about 22157.8929729340. The cubic root of 490972221 is about 788.8945822427.

The spelling of 490972221 in words is "four hundred ninety million, nine hundred seventy-two thousand, two hundred twenty-one".