490991219 has 2 divisors, whose sum is σ = 490991220. Its totient is φ = 490991218.

The previous prime is 490991213. The next prime is 490991261. The reversal of 490991219 is 912199094.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 490991219 - 2⁸ = 490990963 is a prime.

It is a super-2 number, since 2×490991219² = 482144754270211922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 490991219.

It is not a weakly prime, because it can be changed into another prime (490991213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245495609 + 245495610.

It is an arithmetic number, because the mean of its divisors is an integer number (245495610).

Almost surely, 2^490991219 is an apocalyptic number.

490991219 is a deficient number, since it is larger than the sum of its proper divisors (1).

490991219 is an equidigital number, since it uses as much as digits as its factorization.

490991219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 490991219 is about 22158.3216647832. The cubic root of 490991219 is about 788.9047574456.

The spelling of 490991219 in words is "four hundred ninety million, nine hundred ninety-one thousand, two hundred nineteen".