8449172 has 12 divisors (see below), whose sum is σ = 15185940. Its totient is φ = 4110336.

The previous prime is 8449159. The next prime is 8449223. The reversal of 8449172 is 2719448.

It can be written as a sum of positive squares in 2 ways, for example, as 5779216 + 2669956 = 2404^2 + 1634^2 .

It is a congruent number.

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, 28397 + ... + 28692.

It is an arithmetic number, because the mean of its divisors is an integer number (1265495).

Almost surely, 2^8449172 is an apocalyptic number.

It is an amenable number.

8449172 is a deficient number, since it is larger than the sum of its proper divisors (6736768).

8449172 is a wasteful number, since it uses less digits than its factorization.

8449172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57130 (or 57128 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 8449172 is about 2906.7459469310. The cubic root of 8449172 is about 203.6751526053.

The spelling of 8449172 in words is "eight million, four hundred forty-nine thousand, one hundred seventy-two".