4165409 has 4 divisors (see below), whose sum is σ = 4169904. Its totient is φ = 4160916.

The previous prime is 4165397. The next prime is 4165411. The reversal of 4165409 is 9045614.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4165409 - 2⁴ = 4165393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4165489) 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 3 ways as a sum of consecutive naturals, for example, 287 + ... + 2900.

It is an arithmetic number, because the mean of its divisors is an integer number (1042476).

Almost surely, 2^4165409 is an apocalyptic number.

It is an amenable number.

4165409 is a deficient number, since it is larger than the sum of its proper divisors (4495).

4165409 is a wasteful number, since it uses less digits than its factorization.

4165409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 4165409 is about 2040.9333649093. The cubic root of 4165409 is about 160.8987056208.

The spelling of 4165409 in words is "four million, one hundred sixty-five thousand, four hundred nine".