4001148 has 18 divisors (see below), whose sum is σ = 10114104. Its totient is φ = 1333704.

The previous prime is 4001147. The next prime is 4001167. The reversal of 4001148 is 8411004.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a self number, because there is not a number n which added to its sum of digits gives 4001148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001141) 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 5 ways as a sum of consecutive naturals, for example, 55536 + ... + 55607.

Almost surely, 2^4001148 is an apocalyptic number.

It is an amenable number.

4001148 is an abundant number, since it is smaller than the sum of its proper divisors (6112956).

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

4001148 is a wasteful number, since it uses less digits than its factorization.

4001148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111153 (or 111148 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 4001148 is about 2000.2869794107. The cubic root of 4001148 is about 158.7552898810.

The spelling of 4001148 in words is "four million, one thousand, one hundred forty-eight".