489646277 has 4 divisors (see below), whose sum is σ = 498884940. Its totient is φ = 480407616.

The previous prime is 489646249. The next prime is 489646301. The reversal of 489646277 is 772646984.

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

It can be written as a sum of positive squares in 2 ways, for example, as 369831361 + 119814916 = 19231^2 + 10946^2 .

It is a cyclic number.

It is not a de Polignac number, because 489646277 - 2¹⁰ = 489645253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 9238609 = 489646277 / (4 + 8 + 9 + 6 + 4 + 6 + 2 + 7 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489646247) 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, 4619252 + ... + 4619357.

It is an arithmetic number, because the mean of its divisors is an integer number (124721235).

Almost surely, 2^489646277 is an apocalyptic number.

It is an amenable number.

489646277 is a deficient number, since it is larger than the sum of its proper divisors (9238663).

489646277 is an equidigital number, since it uses as much as digits as its factorization.

489646277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9238662.

The product of its digits is 4064256, while the sum is 53.

The square root of 489646277 is about 22127.9523905851. The cubic root of 489646277 is about 788.1837659873.

The spelling of 489646277 in words is "four hundred eighty-nine million, six hundred forty-six thousand, two hundred seventy-seven".