489591331 has 4 divisors (see below), whose sum is σ = 489649032. Its totient is φ = 489533632.

The previous prime is 489591329. The next prime is 489591341. The reversal of 489591331 is 133195984.

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 is a cyclic number.

It is not a de Polignac number, because 489591331 - 2¹ = 489591329 is a prime.

It is a super-2 number, since 2×489591331² = 479399342780703122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489591341) 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, 13345 + ... + 34018.

It is an arithmetic number, because the mean of its divisors is an integer number (122412258).

Almost surely, 2^489591331 is an apocalyptic number.

489591331 is a deficient number, since it is larger than the sum of its proper divisors (57701).

489591331 is a wasteful number, since it uses less digits than its factorization.

489591331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57700.

The product of its digits is 116640, while the sum is 43.

The square root of 489591331 is about 22126.7108039130. The cubic root of 489591331 is about 788.1542826866.

The spelling of 489591331 in words is "four hundred eighty-nine million, five hundred ninety-one thousand, three hundred thirty-one".