489745684 has 6 divisors (see below), whose sum is σ = 857054954. Its totient is φ = 244872840.

The previous prime is 489745681. The next prime is 489745723. The reversal of 489745684 is 486547984.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 274830084 + 214915600 = 16578^2 + 14660^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489745681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61218207 + ... + 61218214.

Almost surely, 2^489745684 is an apocalyptic number.

It is an amenable number.

489745684 is a deficient number, since it is larger than the sum of its proper divisors (367309270).

489745684 is a wasteful number, since it uses less digits than its factorization.

489745684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122436425 (or 122436423 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 55.

The square root of 489745684 is about 22130.1984627341. The cubic root of 489745684 is about 788.2371008712.

The spelling of 489745684 in words is "four hundred eighty-nine million, seven hundred forty-five thousand, six hundred eighty-four".