4002169 has 2 divisors, whose sum is σ = 4002170. Its totient is φ = 4002168.

The previous prime is 4002143. The next prime is 4002197. The reversal of 4002169 is 9612004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2930944 + 1071225 = 1712^2 + 1035^2 .

It is a cyclic number.

It is not a de Polignac number, because 4002169 - 2⁵ = 4002137 is a prime.

It is a super-2 number, since 2×4002169² = 32034713409122, which contains 22 as substring.

It is a Chen prime.

4002169 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4002109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001084 + 2001085.

It is an arithmetic number, because the mean of its divisors is an integer number (2001085).

Almost surely, 2^4002169 is an apocalyptic number.

It is an amenable number.

4002169 is a deficient number, since it is larger than the sum of its proper divisors (1).

4002169 is an equidigital number, since it uses as much as digits as its factorization.

4002169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 4002169 is about 2000.5421765112. The cubic root of 4002169 is about 158.7687922863.

The spelling of 4002169 in words is "four million, two thousand, one hundred sixty-nine".