490817213 has 2 divisors, whose sum is σ = 490817214. Its totient is φ = 490817212.

The previous prime is 490817209. The next prime is 490817219. The reversal of 490817213 is 312718094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411197284 + 79619929 = 20278^2 + 8923^2 .

It is a cyclic number.

It is not a de Polignac number, because 490817213 - 2² = 490817209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490817219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245408606 + 245408607.

It is an arithmetic number, because the mean of its divisors is an integer number (245408607).

Almost surely, 2^490817213 is an apocalyptic number.

It is an amenable number.

490817213 is a deficient number, since it is larger than the sum of its proper divisors (1).

490817213 is an equidigital number, since it uses as much as digits as its factorization.

490817213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 490817213 is about 22154.3948913077. The cubic root of 490817213 is about 788.8115511753.

The spelling of 490817213 in words is "four hundred ninety million, eight hundred seventeen thousand, two hundred thirteen".