8729212 has 6 divisors (see below), whose sum is σ = 15276128. Its totient is φ = 4364604.

The previous prime is 8729207. The next prime is 8729219. The reversal of 8729212 is 2129278.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8729219) by changing a digit.

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 as a sum of consecutive naturals, namely, 1091148 + ... + 1091155.

Almost surely, 2^8729212 is an apocalyptic number.

It is an amenable number.

8729212 is a deficient number, since it is larger than the sum of its proper divisors (6546916).

8729212 is a wasteful number, since it uses less digits than its factorization.

8729212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182307 (or 2182305 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

The square root of 8729212 is about 2954.5239887332. The cubic root of 8729212 is about 205.9009483900.

The spelling of 8729212 in words is "eight million, seven hundred twenty-nine thousand, two hundred twelve".