863173452 has 12 divisors (see below), whose sum is σ = 2014071416. Its totient is φ = 287724480.

The previous prime is 863173373. The next prime is 863173499. The reversal of 863173452 is 254371368.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 863173452.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35965549 + ... + 35965572.

Almost surely, 2^863173452 is an apocalyptic number.

It is an amenable number.

863173452 is an abundant number, since it is smaller than the sum of its proper divisors (1150897964).

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

863173452 is a wasteful number, since it uses less digits than its factorization.

863173452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71931128 (or 71931126 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 863173452 is about 29379.8136821866. The cubic root of 863173452 is about 952.1368159533.

The spelling of 863173452 in words is "eight hundred sixty-three million, one hundred seventy-three thousand, four hundred fifty-two".