490208798969 has 2 divisors, whose sum is σ = 490208798970. Its totient is φ = 490208798968.

The previous prime is 490208798887. The next prime is 490208799083. The reversal of 490208798969 is 969897802094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347113040569 + 143095758400 = 589163^2 + 378280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490208798969 is a prime.

It is a super-2 number, since 2×490208798969² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (490208798269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245104399484 + 245104399485.

It is an arithmetic number, because the mean of its divisors is an integer number (245104399485).

Almost surely, 2^490208798969 is an apocalyptic number.

It is an amenable number.

490208798969 is a deficient number, since it is larger than the sum of its proper divisors (1).

490208798969 is an equidigital number, since it uses as much as digits as its factorization.

490208798969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141087744, while the sum is 71.

The spelling of 490208798969 in words is "four hundred ninety billion, two hundred eight million, seven hundred ninety-eight thousand, nine hundred sixty-nine".