4001166 has 24 divisors (see below), whose sum is σ = 9336600. Its totient is φ = 1231056.

The previous prime is 4001147. The next prime is 4001167. The reversal of 4001166 is 6611004.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8316 + ... + 8783.

It is an arithmetic number, because the mean of its divisors is an integer number (389025).

Almost surely, 2^4001166 is an apocalyptic number.

4001166 is an abundant number, since it is smaller than the sum of its proper divisors (5335434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4001166 is a wasteful number, since it uses less digits than its factorization.

4001166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17120 (or 17117 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 4001166 is about 2000.2914787600. The cubic root of 4001166 is about 158.7555279452.

The spelling of 4001166 in words is "four million, one thousand, one hundred sixty-six".