490709497 has 2 divisors, whose sum is σ = 490709498. Its totient is φ = 490709496.

The previous prime is 490709473. The next prime is 490709519. The reversal of 490709497 is 794907094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340181136 + 150528361 = 18444^2 + 12269^2 .

It is a cyclic number.

It is not a de Polignac number, because 490709497 - 2²⁷ = 356491769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 490709497.

It is not a weakly prime, because it can be changed into another prime (490709797) 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, 245354748 + 245354749.

It is an arithmetic number, because the mean of its divisors is an integer number (245354749).

Almost surely, 2^490709497 is an apocalyptic number.

It is an amenable number.

490709497 is a deficient number, since it is larger than the sum of its proper divisors (1).

490709497 is an equidigital number, since it uses as much as digits as its factorization.

490709497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 490709497 is about 22151.9637278504. The cubic root of 490709497 is about 788.7538420870.

The spelling of 490709497 in words is "four hundred ninety million, seven hundred nine thousand, four hundred ninety-seven".