487278789 has 8 divisors (see below), whose sum is σ = 667264800. Its totient is φ = 316072656.

The previous prime is 487278787. The next prime is 487278791. The reversal of 487278789 is 987872784.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (487278787) and next prime (487278791).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 487278789 - 2¹ = 487278787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487278787) 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 7 ways as a sum of consecutive naturals, for example, 2194839 + ... + 2195060.

It is an arithmetic number, because the mean of its divisors is an integer number (83408100).

Almost surely, 2^487278789 is an apocalyptic number.

It is an amenable number.

487278789 is a deficient number, since it is larger than the sum of its proper divisors (179986011).

487278789 is a wasteful number, since it uses less digits than its factorization.

487278789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4389939.

The product of its digits is 12644352, while the sum is 60.

The square root of 487278789 is about 22074.3921547118. The cubic root of 487278789 is about 786.9113977107.

The spelling of 487278789 in words is "four hundred eighty-seven million, two hundred seventy-eight thousand, seven hundred eighty-nine".