490430491 has 2 divisors, whose sum is σ = 490430492. Its totient is φ = 490430490.

The previous prime is 490430461. The next prime is 490430531. The reversal of 490430491 is 194034094.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 490430491 - 2⁷ = 490430363 is a prime.

It is not a weakly prime, because it can be changed into another prime (490430401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245215245 + 245215246.

It is an arithmetic number, because the mean of its divisors is an integer number (245215246).

Almost surely, 2^490430491 is an apocalyptic number.

490430491 is a deficient number, since it is larger than the sum of its proper divisors (1).

490430491 is an equidigital number, since it uses as much as digits as its factorization.

490430491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 490430491 is about 22145.6652869134. The cubic root of 490430491 is about 788.6043247200.

The spelling of 490430491 in words is "four hundred ninety million, four hundred thirty thousand, four hundred ninety-one".