591316489 has 3 divisors (see below), whose sum is σ = 591340807. Its totient is φ = 591292172.

The previous prime is 591316477. The next prime is 591316543. The reversal of 591316489 is 984613195.

The square root of 591316489 is 24317.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 403407225 + 187909264 = 20085^2 + 13708^2 .

It is not a de Polignac number, because 591316489 - 2¹⁷ = 591185417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (591316459) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 12159 + ... + 36475.

Almost surely, 2^591316489 is an apocalyptic number.

591316489 is the 24317-th square number.

591316489 is the 12159-th centered octagonal number.

It is an amenable number.

591316489 is a deficient number, since it is larger than the sum of its proper divisors (24318).

591316489 is an frugal number, since it uses more digits than its factorization.

591316489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48634 (or 24317 counting only the distinct ones).

The product of its digits is 233280, while the sum is 46.

The cubic root of 591316489 is about 839.3440121295.

The spelling of 591316489 in words is "five hundred ninety-one million, three hundred sixteen thousand, four hundred eighty-nine".