8921365 has 4 divisors (see below), whose sum is σ = 10705644. Its totient is φ = 7137088.

The previous prime is 8921359. The next prime is 8921371. The reversal of 8921365 is 5631298.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5631298 = 2 ⋅2815649.

It is an interprime number because it is at equal distance from previous prime (8921359) and next prime (8921371).

It can be written as a sum of positive squares in 2 ways, for example, as 935089 + 7986276 = 967^2 + 2826^2 .

It is a cyclic number.

It is not a de Polignac number, because 8921365 - 2⁵ = 8921333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8921365.

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 3 ways as a sum of consecutive naturals, for example, 892132 + ... + 892141.

It is an arithmetic number, because the mean of its divisors is an integer number (2676411).

Almost surely, 2^8921365 is an apocalyptic number.

It is an amenable number.

8921365 is a deficient number, since it is larger than the sum of its proper divisors (1784279).

8921365 is a wasteful number, since it uses less digits than its factorization.

8921365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784278.

The product of its digits is 12960, while the sum is 34.

The square root of 8921365 is about 2986.8654137741. The cubic root of 8921365 is about 207.4008041860.

It can be divided in two parts, 892 and 1365, that multiplied together give a triangular number (1217580 = T₁₅₆₀).

The spelling of 8921365 in words is "eight million, nine hundred twenty-one thousand, three hundred sixty-five".