489198491 has 4 divisors (see below), whose sum is σ = 514945800. Its totient is φ = 463451184.

The previous prime is 489198481. The next prime is 489198499. The reversal of 489198491 is 194891984.

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

It is a cyclic number.

It is not a de Polignac number, because 489198491 - 2¹⁴ = 489182107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489198499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12873626 + ... + 12873663.

It is an arithmetic number, because the mean of its divisors is an integer number (128736450).

Almost surely, 2^489198491 is an apocalyptic number.

489198491 is a deficient number, since it is larger than the sum of its proper divisors (25747309).

489198491 is a wasteful number, since it uses less digits than its factorization.

489198491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25747308.

The product of its digits is 746496, while the sum is 53.

The square root of 489198491 is about 22117.8319687984. The cubic root of 489198491 is about 787.9434256196.

The spelling of 489198491 in words is "four hundred eighty-nine million, one hundred ninety-eight thousand, four hundred ninety-one".