490085657 has 2 divisors, whose sum is σ = 490085658. Its totient is φ = 490085656.

The previous prime is 490085641. The next prime is 490085689. The reversal of 490085657 is 756580094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 366186496 + 123899161 = 19136^2 + 11131^2 .

It is a cyclic number.

It is not a de Polignac number, because 490085657 - 2⁴ = 490085641 is a prime.

It is not a weakly prime, because it can be changed into another prime (490085257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245042828 + 245042829.

It is an arithmetic number, because the mean of its divisors is an integer number (245042829).

Almost surely, 2^490085657 is an apocalyptic number.

It is an amenable number.

490085657 is a deficient number, since it is larger than the sum of its proper divisors (1).

490085657 is an equidigital number, since it uses as much as digits as its factorization.

490085657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 490085657 is about 22137.8783310416. The cubic root of 490085657 is about 788.4194522124.

The spelling of 490085657 in words is "four hundred ninety million, eighty-five thousand, six hundred fifty-seven".