489905975 has 24 divisors (see below), whose sum is σ = 688653840. Its totient is φ = 342731520.

The previous prime is 489905971. The next prime is 489905987. The reversal of 489905975 is 579509984.

It is not a de Polignac number, because 489905975 - 2² = 489905971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489905975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489905971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33494 + ... + 45843.

It is an arithmetic number, because the mean of its divisors is an integer number (28693910).

Almost surely, 2^489905975 is an apocalyptic number.

489905975 is a deficient number, since it is larger than the sum of its proper divisors (198747865).

489905975 is a wasteful number, since it uses less digits than its factorization.

489905975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79379 (or 79374 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 56.

The square root of 489905975 is about 22133.8197110214. The cubic root of 489905975 is about 788.3230866767.

The spelling of 489905975 in words is "four hundred eighty-nine million, nine hundred five thousand, nine hundred seventy-five".