493865172 has 72 divisors (see below), whose sum is σ = 1284115560. Its totient is φ = 159943680.

The previous prime is 493865167. The next prime is 493865179. The reversal of 493865172 is 271568394.

It can be written as a sum of positive squares in 4 ways, for example, as 32216976 + 461648196 = 5676^2 + 21486^2 .

It is a super-2 number, since 2×493865172² = 487805616229179168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493865179) 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 23 ways as a sum of consecutive naturals, for example, 461454 + ... + 462522.

Almost surely, 2^493865172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 493865172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (642057780).

493865172 is an abundant number, since it is smaller than the sum of its proper divisors (790250388).

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

493865172 is a wasteful number, since it uses less digits than its factorization.

493865172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433 (or 1428 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 493865172 is about 22223.0774646537. The cubic root of 493865172 is about 790.4410142416.

The spelling of 493865172 in words is "four hundred ninety-three million, eight hundred sixty-five thousand, one hundred seventy-two".