489256447 has 4 divisors (see below), whose sum is σ = 518036256. Its totient is φ = 460476640.

The previous prime is 489256433. The next prime is 489256463. The reversal of 489256447 is 744652984.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489256447 is a prime.

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 489256447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489256487) 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, 14389879 + ... + 14389912.

It is an arithmetic number, because the mean of its divisors is an integer number (129509064).

Almost surely, 2^489256447 is an apocalyptic number.

489256447 is a deficient number, since it is larger than the sum of its proper divisors (28779809).

489256447 is a wasteful number, since it uses less digits than its factorization.

489256447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28779808.

The product of its digits is 1935360, while the sum is 49.

The square root of 489256447 is about 22119.1420945750. The cubic root of 489256447 is about 787.9745406283.

The spelling of 489256447 in words is "four hundred eighty-nine million, two hundred fifty-six thousand, four hundred forty-seven".