9444865 has 16 divisors (see below), whose sum is σ = 11955600. Its totient is φ = 7151872.

The previous prime is 9444847. The next prime is 9444887. The reversal of 9444865 is 5684449.

9444865 = T₂₈₆ + T₂₈₇ + ... + T₄₃₀.

It can be written as a sum of positive squares in 8 ways, for example, as 1373584 + 8071281 = 1172^2 + 2841^2 .

It is a cyclic number.

It is not a de Polignac number, because 9444865 - 2⁵ = 9444833 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, 7071 + ... + 8299.

It is an arithmetic number, because the mean of its divisors is an integer number (747225).

Almost surely, 2^9444865 is an apocalyptic number.

9444865 is the 1537-th decagonal number.

It is an amenable number.

9444865 is a deficient number, since it is larger than the sum of its proper divisors (2510735).

9444865 is a wasteful number, since it uses less digits than its factorization.

9444865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316.

The product of its digits is 138240, while the sum is 40.

The square root of 9444865 is about 3073.2499084845. The cubic root of 9444865 is about 211.3806609719.

The spelling of 9444865 in words is "nine million, four hundred forty-four thousand, eight hundred sixty-five".