494530889 has 18 divisors (see below), whose sum is σ = 533106378. Its totient is φ = 458436000.

The previous prime is 494530811. The next prime is 494530909. The reversal of 494530889 is 988035494.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 301543225 + 192987664 = 17365^2 + 13892^2 .

It is not a de Polignac number, because 494530889 - 2²⁴ = 477753673 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494530189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3274964 + ... + 3275114.

It is an arithmetic number, because the mean of its divisors is an integer number (29617021).

Almost surely, 2^494530889 is an apocalyptic number.

It is an amenable number.

494530889 is a deficient number, since it is larger than the sum of its proper divisors (38575489).

494530889 is an equidigital number, since it uses as much as digits as its factorization.

494530889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 494530889 is about 22238.0504766043. The cubic root of 494530889 is about 790.7960192027.

The spelling of 494530889 in words is "four hundred ninety-four million, five hundred thirty thousand, eight hundred eighty-nine".