4400165 has 24 divisors (see below), whose sum is σ = 6639360. Its totient is φ = 2740320.

The previous prime is 4400131. The next prime is 4400167. The reversal of 4400165 is 5610044.

4400165 = 225² + 226² + ... + 290².

It is a happy number.

It is not a de Polignac number, because 4400165 - 2⁶ = 4400101 is a prime.

It is a super-2 number, since 2×4400165² = 38722904054450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400167) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3716 + ... + 4754.

It is an arithmetic number, because the mean of its divisors is an integer number (276640).

Almost surely, 2^4400165 is an apocalyptic number.

It is an amenable number.

4400165 is a deficient number, since it is larger than the sum of its proper divisors (2239195).

4400165 is a wasteful number, since it uses less digits than its factorization.

4400165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073 (or 1062 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 4400165 is about 2097.6570263034. The cubic root of 4400165 is about 163.8663023977.

The spelling of 4400165 in words is "four million, four hundred thousand, one hundred sixty-five".