8445172 has 12 divisors (see below), whose sum is σ = 14823396. Its totient is φ = 4209920.

The previous prime is 8445161. The next prime is 8445251. The reversal of 8445172 is 2715448.

It can be written as a sum of positive squares in 2 ways, for example, as 1454436 + 6990736 = 1206^2 + 2644^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579 + ... + 4402.

It is an arithmetic number, because the mean of its divisors is an integer number (1235283).

Almost surely, 2^8445172 is an apocalyptic number.

It is an amenable number.

8445172 is a deficient number, since it is larger than the sum of its proper divisors (6378224).

8445172 is a wasteful number, since it uses less digits than its factorization.

8445172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6338 (or 6336 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 8445172 is about 2906.0578108496. The cubic root of 8445172 is about 203.6430062913.

The spelling of 8445172 in words is "eight million, four hundred forty-five thousand, one hundred seventy-two".