490898693 has 2 divisors, whose sum is σ = 490898694. Its totient is φ = 490898692.

The previous prime is 490898677. The next prime is 490898701. The reversal of 490898693 is 396898094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 362597764 + 128300929 = 19042^2 + 11327^2 .

It is a cyclic number.

It is not a de Polignac number, because 490898693 - 2⁴ = 490898677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490898663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245449346 + 245449347.

It is an arithmetic number, because the mean of its divisors is an integer number (245449347).

Almost surely, 2^490898693 is an apocalyptic number.

It is an amenable number.

490898693 is a deficient number, since it is larger than the sum of its proper divisors (1).

490898693 is an equidigital number, since it uses as much as digits as its factorization.

490898693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 56.

The square root of 490898693 is about 22156.2337277796. The cubic root of 490898693 is about 788.8551986590.

The spelling of 490898693 in words is "four hundred ninety million, eight hundred ninety-eight thousand, six hundred ninety-three".