8391365 has 16 divisors (see below), whose sum is σ = 10335600. Its totient is φ = 6538752.

The previous prime is 8391349. The next prime is 8391377. The reversal of 8391365 is 5631938.

It can be written as a sum of positive squares in 8 ways, for example, as 91204 + 8300161 = 302^2 + 2881^2 .

It is a cyclic number.

It is not a de Polignac number, because 8391365 - 2⁴ = 8391349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48419 + ... + 48591.

It is an arithmetic number, because the mean of its divisors is an integer number (645975).

Almost surely, 2^8391365 is an apocalyptic number.

It is an amenable number.

8391365 is a deficient number, since it is larger than the sum of its proper divisors (1944235).

8391365 is a wasteful number, since it uses less digits than its factorization.

8391365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376.

The product of its digits is 19440, while the sum is 35.

The square root of 8391365 is about 2896.7852871761. The cubic root of 8391365 is about 203.2095920643.

The spelling of 8391365 in words is "eight million, three hundred ninety-one thousand, three hundred sixty-five".