4002171 has 4 divisors (see below), whose sum is σ = 5336232. Its totient is φ = 2668112.

The previous prime is 4002169. The next prime is 4002197. The reversal of 4002171 is 1712004.

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

It is a cyclic number.

It is not a de Polignac number, because 4002171 - 2¹ = 4002169 is a prime.

It is a super-3 number, since 3×4002171³ (a number of 21 digits) contains 333 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 4002171.

It is not an unprimeable number, because it can be changed into a prime (4002101) 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, 667026 + ... + 667031.

It is an arithmetic number, because the mean of its divisors is an integer number (1334058).

Almost surely, 2^4002171 is an apocalyptic number.

4002171 is a deficient number, since it is larger than the sum of its proper divisors (1334061).

4002171 is a wasteful number, since it uses less digits than its factorization.

4002171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334060.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 4002171 is about 2000.5426763756. The cubic root of 4002171 is about 158.7688187334.

Adding to 4002171 its reverse (1712004), we get a palindrome (5714175).

The spelling of 4002171 in words is "four million, two thousand, one hundred seventy-one".