8309916 has 36 divisors (see below), whose sum is σ = 22113000. Its totient is φ = 2623968.

The previous prime is 8309909. The next prime is 8309963. The reversal of 8309916 is 6199038.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5391 + ... + 6758.

It is an arithmetic number, because the mean of its divisors is an integer number (614250).

Almost surely, 2^8309916 is an apocalyptic number.

It is an amenable number.

8309916 is an abundant number, since it is smaller than the sum of its proper divisors (13803084).

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

8309916 is a wasteful number, since it uses less digits than its factorization.

8309916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12178 (or 12173 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 8309916 is about 2882.6924914045. The cubic root of 8309916 is about 202.5499830892.

The spelling of 8309916 in words is "eight million, three hundred nine thousand, nine hundred sixteen".