493989172 has 6 divisors (see below), whose sum is σ = 864481058. Its totient is φ = 246994584.

The previous prime is 493989157. The next prime is 493989229. The reversal of 493989172 is 271989394.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 481626916 + 12362256 = 21946^2 + 3516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61748643 + ... + 61748650.

Almost surely, 2^493989172 is an apocalyptic number.

It is an amenable number.

493989172 is a deficient number, since it is larger than the sum of its proper divisors (370491886).

493989172 is a wasteful number, since it uses less digits than its factorization.

493989172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123497297 (or 123497295 counting only the distinct ones).

The product of its digits is 979776, while the sum is 52.

The square root of 493989172 is about 22225.8671821821. The cubic root of 493989172 is about 790.5071635263.

The spelling of 493989172 in words is "four hundred ninety-three million, nine hundred eighty-nine thousand, one hundred seventy-two".