863172952 has 8 divisors (see below), whose sum is σ = 1618449300. Its totient is φ = 431586472.

The previous prime is 863172941. The next prime is 863172979. The reversal of 863172952 is 259271368.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 863172899 and 863172908.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 53948302 + ... + 53948317.

Almost surely, 2^863172952 is an apocalyptic number.

It is an amenable number.

863172952 is a deficient number, since it is larger than the sum of its proper divisors (755276348).

863172952 is a wasteful number, since it uses less digits than its factorization.

863172952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107896625 (or 107896621 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 863172952 is about 29379.8051729415. The cubic root of 863172952 is about 952.1366321090.

The spelling of 863172952 in words is "eight hundred sixty-three million, one hundred seventy-two thousand, nine hundred fifty-two".