8228709 has 12 divisors (see below), whose sum is σ = 12326496. Its totient is φ = 5485644.

The previous prime is 8228651. The next prime is 8228723. The reversal of 8228709 is 9078228.

It is not a de Polignac number, because 8228709 - 2⁷ = 8228581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8228009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16689 + ... + 17174.

It is an arithmetic number, because the mean of its divisors is an integer number (1027208).

Almost surely, 2^8228709 is an apocalyptic number.

It is an amenable number.

8228709 is a deficient number, since it is larger than the sum of its proper divisors (4097787).

8228709 is an equidigital number, since it uses as much as digits as its factorization.

8228709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33878 (or 33866 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 8228709 is about 2868.5726415763. The cubic root of 8228709 is about 201.8880289814. Note that the first 3 decimals are identical.

The spelling of 8228709 in words is "eight million, two hundred twenty-eight thousand, seven hundred nine".