478518489 has 32 divisors (see below), whose sum is σ = 728394240. Its totient is φ = 310367376.

The previous prime is 478518463. The next prime is 478518493. The reversal of 478518489 is 984815874.

478518489 is a `hidden beast` number, since 47 + 8 + 518 + 4 + 89 = 666.

It is not a de Polignac number, because 478518489 - 2⁵ = 478518457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478518409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148554 + ... + 151740.

It is an arithmetic number, because the mean of its divisors is an integer number (22762320).

Almost surely, 2^478518489 is an apocalyptic number.

It is an amenable number.

478518489 is a deficient number, since it is larger than the sum of its proper divisors (249875751).

478518489 is a wasteful number, since it uses less digits than its factorization.

478518489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346 (or 3340 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 478518489 is about 21875.0654627592. The cubic root of 478518489 is about 782.1671536725.

The spelling of 478518489 in words is "four hundred seventy-eight million, five hundred eighteen thousand, four hundred eighty-nine".