478887289 has 4 divisors (see below), whose sum is σ = 482058880. Its totient is φ = 475715700.

The previous prime is 478887281. The next prime is 478887323. The reversal of 478887289 is 982788874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 478887289 - 2³ = 478887281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478887281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585569 + ... + 1585870.

It is an arithmetic number, because the mean of its divisors is an integer number (120514720).

Almost surely, 2^478887289 is an apocalyptic number.

It is an amenable number.

478887289 is a deficient number, since it is larger than the sum of its proper divisors (3171591).

478887289 is a wasteful number, since it uses less digits than its factorization.

478887289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171590.

The product of its digits is 14450688, while the sum is 61.

The square root of 478887289 is about 21883.4935282281. The cubic root of 478887289 is about 782.3680439740.

The spelling of 478887289 in words is "four hundred seventy-eight million, eight hundred eighty-seven thousand, two hundred eighty-nine".