489981874 has 4 divisors (see below), whose sum is σ = 734972814. Its totient is φ = 244990936.

The previous prime is 489981853. The next prime is 489981889. The reversal of 489981874 is 478189984.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 460746225 + 29235649 = 21465^2 + 5407^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122495467 + ... + 122495470.

Almost surely, 2^489981874 is an apocalyptic number.

489981874 is a deficient number, since it is larger than the sum of its proper divisors (244990940).

489981874 is a wasteful number, since it uses less digits than its factorization.

489981874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244990939.

The product of its digits is 4644864, while the sum is 58.

The square root of 489981874 is about 22135.5341927860. The cubic root of 489981874 is about 788.3637950625.

The spelling of 489981874 in words is "four hundred eighty-nine million, nine hundred eighty-one thousand, eight hundred seventy-four".