490654589 has 2 divisors, whose sum is σ = 490654590. Its totient is φ = 490654588.

The previous prime is 490654531. The next prime is 490654609. The reversal of 490654589 is 985456094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408444100 + 82210489 = 20210^2 + 9067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490654589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490654519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245327294 + 245327295.

It is an arithmetic number, because the mean of its divisors is an integer number (245327295).

Almost surely, 2^490654589 is an apocalyptic number.

It is an amenable number.

490654589 is a deficient number, since it is larger than the sum of its proper divisors (1).

490654589 is an equidigital number, since it uses as much as digits as its factorization.

490654589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The square root of 490654589 is about 22150.7243448155. The cubic root of 490654589 is about 788.7244217534.

It can be divided in two parts, 4906 and 54589, that added together give a palindrome (59495).

The spelling of 490654589 in words is "four hundred ninety million, six hundred fifty-four thousand, five hundred eighty-nine".