489664953 has 16 divisors (see below), whose sum is σ = 726186240. Its totient is φ = 326102832.

The previous prime is 489664949. The next prime is 489664969. The reversal of 489664953 is 359466984.

It is not a de Polignac number, because 489664953 - 2² = 489664949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489664953.

It is not an unprimeable number, because it can be changed into a prime (489660953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18400 + ... + 36302.

It is an arithmetic number, because the mean of its divisors is an integer number (45386640).

Almost surely, 2^489664953 is an apocalyptic number.

It is an amenable number.

489664953 is a deficient number, since it is larger than the sum of its proper divisors (236521287).

489664953 is a wasteful number, since it uses less digits than its factorization.

489664953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18925 (or 18919 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The square root of 489664953 is about 22128.3743867461. The cubic root of 489664953 is about 788.1937867809.

The spelling of 489664953 in words is "four hundred eighty-nine million, six hundred sixty-four thousand, nine hundred fifty-three".