859231172 has 6 divisors (see below), whose sum is σ = 1503654558. Its totient is φ = 429615584.

The previous prime is 859231147. The next prime is 859231183. The reversal of 859231172 is 271132958.

It can be written as a sum of positive squares in only one way, i.e., 560079556 + 299151616 = 23666^2 + 17296^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107403893 + ... + 107403900.

It is an arithmetic number, because the mean of its divisors is an integer number (250609093).

Almost surely, 2^859231172 is an apocalyptic number.

It is an amenable number.

859231172 is a deficient number, since it is larger than the sum of its proper divisors (644423386).

859231172 is a wasteful number, since it uses less digits than its factorization.

859231172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214807797 (or 214807795 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The square root of 859231172 is about 29312.6452576358. The cubic root of 859231172 is about 950.6850726145.

The spelling of 859231172 in words is "eight hundred fifty-nine million, two hundred thirty-one thousand, one hundred seventy-two".