490236491 has 2 divisors, whose sum is σ = 490236492. Its totient is φ = 490236490.

The previous prime is 490236473. The next prime is 490236493. The reversal of 490236491 is 194632094.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490236491 is a prime.

Together with 490236493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (490236493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245118245 + 245118246.

It is an arithmetic number, because the mean of its divisors is an integer number (245118246).

Almost surely, 2^490236491 is an apocalyptic number.

490236491 is a deficient number, since it is larger than the sum of its proper divisors (1).

490236491 is an equidigital number, since it uses as much as digits as its factorization.

490236491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 490236491 is about 22141.2847639878. The cubic root of 490236491 is about 788.5003280484.

The spelling of 490236491 in words is "four hundred ninety million, two hundred thirty-six thousand, four hundred ninety-one".