8209712 has 40 divisors (see below), whose sum is σ = 18974976. Its totient is φ = 3364416.

The previous prime is 8209709. The next prime is 8209723. The reversal of 8209712 is 2179028.

It is a happy number.

It is a super-2 number, since 2×8209712² = 134798742245888, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 983 + ... + 4169.

Almost surely, 2^8209712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8209712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9487488).

8209712 is an abundant number, since it is smaller than the sum of its proper divisors (10765264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8209712 is a wasteful number, since it uses less digits than its factorization.

8209712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225 (or 3219 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 8209712 is about 2865.2594995916. The cubic root of 8209712 is about 201.7325480477.

The spelling of 8209712 in words is "eight million, two hundred nine thousand, seven hundred twelve".