489636931 has 8 divisors (see below), whose sum is σ = 559919360. Its totient is φ = 419438088.

The previous prime is 489636887. The next prime is 489636967. The reversal of 489636931 is 139636984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 489636931 - 2¹⁵ = 489604163 is a prime.

It is a super-2 number, since 2×489636931² = 479488648398197522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (489636031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7791 + ... + 32248.

It is an arithmetic number, because the mean of its divisors is an integer number (69989920).

Almost surely, 2^489636931 is an apocalyptic number.

489636931 is a deficient number, since it is larger than the sum of its proper divisors (70282429).

489636931 is a wasteful number, since it uses less digits than its factorization.

489636931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41793.

The product of its digits is 839808, while the sum is 49.

The square root of 489636931 is about 22127.7412087181. The cubic root of 489636931 is about 788.1787512024.

The spelling of 489636931 in words is "four hundred eighty-nine million, six hundred thirty-six thousand, nine hundred thirty-one".