478988489 has 16 divisors (see below), whose sum is σ = 551591040. Its totient is φ = 407445120.

The previous prime is 478988479. The next prime is 478988513. The reversal of 478988489 is 984889874.

It is a cyclic number.

It is not a de Polignac number, because 478988489 - 2⁴ = 478988473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478988429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 838574 + ... + 839144.

It is an arithmetic number, because the mean of its divisors is an integer number (34474440).

Almost surely, 2^478988489 is an apocalyptic number.

It is an amenable number.

478988489 is a deficient number, since it is larger than the sum of its proper divisors (72602551).

478988489 is a wasteful number, since it uses less digits than its factorization.

478988489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280.

The product of its digits is 37158912, while the sum is 65.

The square root of 478988489 is about 21885.8056511521. The cubic root of 478988489 is about 782.4231509350.

The spelling of 478988489 in words is "four hundred seventy-eight million, nine hundred eighty-eight thousand, four hundred eighty-nine".