490522397 has 2 divisors, whose sum is σ = 490522398. Its totient is φ = 490522396.

The previous prime is 490522391. The next prime is 490522421. The reversal of 490522397 is 793225094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 484924441 + 5597956 = 22021^2 + 2366^2 .

It is a cyclic number.

It is not a de Polignac number, because 490522397 - 2¹⁰ = 490521373 is a prime.

It is a super-2 number, since 2×490522397² = 481224443917251218, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490522391) 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, 245261198 + 245261199.

It is an arithmetic number, because the mean of its divisors is an integer number (245261199).

Almost surely, 2^490522397 is an apocalyptic number.

It is an amenable number.

490522397 is a deficient number, since it is larger than the sum of its proper divisors (1).

490522397 is an equidigital number, since it uses as much as digits as its factorization.

490522397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 490522397 is about 22147.7402233275. The cubic root of 490522397 is about 788.6535827653.

The spelling of 490522397 in words is "four hundred ninety million, five hundred twenty-two thousand, three hundred ninety-seven".