490422209 has 2 divisors, whose sum is σ = 490422210. Its totient is φ = 490422208.

The previous prime is 490422157. The next prime is 490422221. The reversal of 490422209 is 902224094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 352876225 + 137545984 = 18785^2 + 11728^2 .

It is a cyclic number.

It is not a de Polignac number, because 490422209 - 2¹² = 490418113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (490422259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245211104 + 245211105.

It is an arithmetic number, because the mean of its divisors is an integer number (245211105).

Almost surely, 2^490422209 is an apocalyptic number.

It is an amenable number.

490422209 is a deficient number, since it is larger than the sum of its proper divisors (1).

490422209 is an equidigital number, since it uses as much as digits as its factorization.

490422209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 490422209 is about 22145.4782969346. The cubic root of 490422209 is about 788.5998855875.

The spelling of 490422209 in words is "four hundred ninety million, four hundred twenty-two thousand, two hundred nine".