8361009 has 8 divisors (see below), whose sum is σ = 12386720. Its totient is φ = 5573988.

The previous prime is 8360999. The next prime is 8361011. The reversal of 8361009 is 9001638.

It is not a de Polignac number, because 8361009 - 2⁵ = 8360977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 309667 = 8361009 / (8 + 3 + 6 + 1 + 0 + 0 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8361709) 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 7 ways as a sum of consecutive naturals, for example, 154807 + ... + 154860.

It is an arithmetic number, because the mean of its divisors is an integer number (1548340).

Almost surely, 2^8361009 is an apocalyptic number.

It is an amenable number.

8361009 is a deficient number, since it is larger than the sum of its proper divisors (4025711).

8361009 is a wasteful number, since it uses less digits than its factorization.

8361009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309676 (or 309670 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 8361009 is about 2891.5409386692. The cubic root of 8361009 is about 202.9642571770.

The spelling of 8361009 in words is "eight million, three hundred sixty-one thousand, nine".