489591968 has 48 divisors (see below), whose sum is σ = 977866344. Its totient is φ = 241274880.

The previous prime is 489591953. The next prime is 489591983. The reversal of 489591968 is 869195984.

489591968 = 1822² + 1823² + ... + 1958².

It is an interprime number because it is at equal distance from previous prime (489591953) and next prime (489591983).

It can be written as a sum of positive squares in 4 ways, for example, as 144672784 + 344919184 = 12028^2 + 18572^2 .

It is a super-2 number, since 2×489591968² = 479400590260226048, which contains 22 as substring.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 793196 + ... + 793812.

Almost surely, 2^489591968 is an apocalyptic number.

It is an amenable number.

489591968 is a deficient number, since it is larger than the sum of its proper divisors (488274376).

489591968 is a wasteful number, since it uses less digits than its factorization.

489591968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 937 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 59.

The square root of 489591968 is about 22126.7251982755. The cubic root of 489591968 is about 788.1546245051.

The spelling of 489591968 in words is "four hundred eighty-nine million, five hundred ninety-one thousand, nine hundred sixty-eight".