490223969 has 2 divisors, whose sum is σ = 490223970. Its totient is φ = 490223968.

The previous prime is 490223947. The next prime is 490224017. The reversal of 490223969 is 969322094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275161744 + 215062225 = 16588^2 + 14665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490223969 is a prime.

It is a super-2 number, since 2×490223969² = 480639079564225922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (490226969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245111984 + 245111985.

It is an arithmetic number, because the mean of its divisors is an integer number (245111985).

Almost surely, 2^490223969 is an apocalyptic number.

It is an amenable number.

490223969 is a deficient number, since it is larger than the sum of its proper divisors (1).

490223969 is an equidigital number, since it uses as much as digits as its factorization.

490223969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 490223969 is about 22141.0019872634. The cubic root of 490223969 is about 788.4936144959.

The spelling of 490223969 in words is "four hundred ninety million, two hundred twenty-three thousand, nine hundred sixty-nine".