490000457 has 2 divisors, whose sum is σ = 490000458. Its totient is φ = 490000456.

The previous prime is 490000421. The next prime is 490000463. The reversal of 490000457 is 754000094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385572496 + 104427961 = 19636^2 + 10219^2 .

It is a cyclic number.

It is not a de Polignac number, because 490000457 - 2⁶ = 490000393 is a prime.

It is not a weakly prime, because it can be changed into another prime (490000057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245000228 + 245000229.

It is an arithmetic number, because the mean of its divisors is an integer number (245000229).

Almost surely, 2^490000457 is an apocalyptic number.

It is an amenable number.

490000457 is a deficient number, since it is larger than the sum of its proper divisors (1).

490000457 is an equidigital number, since it uses as much as digits as its factorization.

490000457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 490000457 is about 22135.9539437540. The cubic root of 490000457 is about 788.3737614034.

The spelling of 490000457 in words is "four hundred ninety million, four hundred fifty-seven", and thus it is an aban number.