488889985 has 4 divisors (see below), whose sum is σ = 586667988. Its totient is φ = 391111984.

The previous prime is 488889983. The next prime is 488889997. The reversal of 488889985 is 589988884.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 327320464 + 161569521 = 18092^2 + 12711^2 .

It is a cyclic number.

It is not a de Polignac number, because 488889985 - 2¹ = 488889983 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 488889985.

It is not an unprimeable number, because it can be changed into a prime (488889983) 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, 48888994 + ... + 48889003.

It is an arithmetic number, because the mean of its divisors is an integer number (146666997).

Almost surely, 2^488889985 is an apocalyptic number.

It is an amenable number.

488889985 is a deficient number, since it is larger than the sum of its proper divisors (97778003).

488889985 is an equidigital number, since it uses as much as digits as its factorization.

488889985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97778002.

The product of its digits is 53084160, while the sum is 67.

The square root of 488889985 is about 22110.8567224339. The cubic root of 488889985 is about 787.7777557220. Note that the first 4 decimals are identical.

The spelling of 488889985 in words is "four hundred eighty-eight million, eight hundred eighty-nine thousand, nine hundred eighty-five".