9943165 has 4 divisors (see below), whose sum is σ = 11931804. Its totient is φ = 7954528.

The previous prime is 9943159. The next prime is 9943187. The reversal of 9943165 is 5613499.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4439449 + 5503716 = 2107^2 + 2346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9943165 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994312 + ... + 994321.

It is an arithmetic number, because the mean of its divisors is an integer number (2982951).

Almost surely, 2^9943165 is an apocalyptic number.

It is an amenable number.

9943165 is a deficient number, since it is larger than the sum of its proper divisors (1988639).

9943165 is a wasteful number, since it uses less digits than its factorization.

9943165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988638.

The product of its digits is 29160, while the sum is 37.

The square root of 9943165 is about 3153.2784526584. The cubic root of 9943165 is about 215.0345356456.

It can be divided in two parts, 99 and 43165, that added together give a square (43264 = 208²).

The spelling of 9943165 in words is "nine million, nine hundred forty-three thousand, one hundred sixty-five".