489561403 has 4 divisors (see below), whose sum is σ = 492847200. Its totient is φ = 486275608.

The previous prime is 489561367. The next prime is 489561419. The reversal of 489561403 is 304165984.

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-489561403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489561103) 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, 1642675 + ... + 1642972.

It is an arithmetic number, because the mean of its divisors is an integer number (123211800).

Almost surely, 2^489561403 is an apocalyptic number.

489561403 is a deficient number, since it is larger than the sum of its proper divisors (3285797).

489561403 is a wasteful number, since it uses less digits than its factorization.

489561403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285796.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 489561403 is about 22126.0345068880. The cubic root of 489561403 is about 788.1382227876.

The spelling of 489561403 in words is "four hundred eighty-nine million, five hundred sixty-one thousand, four hundred three".