493421780 has 18 divisors (see below), whose sum is σ = 1036394394. Its totient is φ = 197328976.

The previous prime is 493421743. The next prime is 493421807. The reversal of 493421780 is 87124394.

It can be written as a sum of positive squares in only one way, i.e., 394737424 + 98684356 = 19868^2 + 9934^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 96857 + ... + 101823.

Almost surely, 2^493421780 is an apocalyptic number.

It is an amenable number.

493421780 is an abundant number, since it is smaller than the sum of its proper divisors (542972614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

493421780 is an frugal number, since it uses more digits than its factorization.

493421780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9943 (or 4974 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 493421780 is about 22213.0992884829. The cubic root of 493421780 is about 790.2043908472.

The spelling of 493421780 in words is "four hundred ninety-three million, four hundred twenty-one thousand, seven hundred eighty".