490019797 has 2 divisors, whose sum is σ = 490019798. Its totient is φ = 490019796.

The previous prime is 490019773. The next prime is 490019809. The reversal of 490019797 is 797910094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 463713156 + 26306641 = 21534^2 + 5129^2 .

It is a cyclic number.

It is not a de Polignac number, because 490019797 - 2¹⁹ = 489495509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490019707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245009898 + 245009899.

It is an arithmetic number, because the mean of its divisors is an integer number (245009899).

Almost surely, 2^490019797 is an apocalyptic number.

It is an amenable number.

490019797 is a deficient number, since it is larger than the sum of its proper divisors (1).

490019797 is an equidigital number, since it uses as much as digits as its factorization.

490019797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 490019797 is about 22136.3907853110. The cubic root of 490019797 is about 788.3841334672.

The spelling of 490019797 in words is "four hundred ninety million, nineteen thousand, seven hundred ninety-seven".