490933169 has 2 divisors, whose sum is σ = 490933170. Its totient is φ = 490933168.

The previous prime is 490933151. The next prime is 490933181. The reversal of 490933169 is 961339094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487835569 + 3097600 = 22087^2 + 1760^2 .

It is a cyclic number.

It is not a de Polignac number, because 490933169 - 2⁸ = 490932913 is a prime.

It is a super-2 number, since 2×490933169² = 482030752848765122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (490933109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245466584 + 245466585.

It is an arithmetic number, because the mean of its divisors is an integer number (245466585).

Almost surely, 2^490933169 is an apocalyptic number.

It is an amenable number.

490933169 is a deficient number, since it is larger than the sum of its proper divisors (1).

490933169 is an equidigital number, since it uses as much as digits as its factorization.

490933169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 490933169 is about 22157.0117344375. The cubic root of 490933169 is about 788.8736654258.

The spelling of 490933169 in words is "four hundred ninety million, nine hundred thirty-three thousand, one hundred sixty-nine".