8117972 has 12 divisors (see below), whose sum is σ = 14247156. Its totient is φ = 4047360.

The previous prime is 8117969. The next prime is 8118023. The reversal of 8117972 is 2797118.

It can be written as a sum of positive squares in 2 ways, for example, as 5180176 + 2937796 = 2276^2 + 1714^2 .

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, 1229 + ... + 4212.

It is an arithmetic number, because the mean of its divisors is an integer number (1187263).

Almost surely, 2^8117972 is an apocalyptic number.

It is an amenable number.

8117972 is a deficient number, since it is larger than the sum of its proper divisors (6129184).

8117972 is a wasteful number, since it uses less digits than its factorization.

8117972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5818 (or 5816 counting only the distinct ones).

The product of its digits is 7056, while the sum is 35.

The square root of 8117972 is about 2849.2055032939. The cubic root of 8117972 is about 200.9783067766.

The spelling of 8117972 in words is "eight million, one hundred seventeen thousand, nine hundred seventy-two".