8972217 has 12 divisors (see below), whose sum is σ = 13117104. Its totient is φ = 5908920.

The previous prime is 8972207. The next prime is 8972219. The reversal of 8972217 is 7122798.

It is not a de Polignac number, because 8972217 - 2¹² = 8968121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8972219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5259 + ... + 6752.

It is an arithmetic number, because the mean of its divisors is an integer number (1093092).

Almost surely, 2^8972217 is an apocalyptic number.

It is an amenable number.

8972217 is a deficient number, since it is larger than the sum of its proper divisors (4144887).

8972217 is a wasteful number, since it uses less digits than its factorization.

8972217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12100 (or 12097 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 8972217 is about 2995.3659208851. The cubic root of 8972217 is about 207.7941210535.

The spelling of 8972217 in words is "eight million, nine hundred seventy-two thousand, two hundred seventeen".