489652989 has 24 divisors (see below), whose sum is σ = 792619968. Its totient is φ = 263339520.

The previous prime is 489652987. The next prime is 489653033. The reversal of 489652989 is 989256984.

It is not a de Polignac number, because 489652989 - 2¹ = 489652987 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489652987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34272 + ... + 46409.

It is an arithmetic number, because the mean of its divisors is an integer number (33025832).

Almost surely, 2^489652989 is an apocalyptic number.

It is an amenable number.

489652989 is a deficient number, since it is larger than the sum of its proper divisors (302966979).

489652989 is a wasteful number, since it uses less digits than its factorization.

489652989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80725 (or 80708 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 60.

The square root of 489652989 is about 22128.1040534430. The cubic root of 489652989 is about 788.1873674070.

The spelling of 489652989 in words is "four hundred eighty-nine million, six hundred fifty-two thousand, nine hundred eighty-nine".