4001384 has 8 divisors (see below), whose sum is σ = 7502610. Its totient is φ = 2000688.

The previous prime is 4001383. The next prime is 4001399. The reversal of 4001384 is 4831004.

4001384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2102500 + 1898884 = 1450^2 + 1378^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×4001384² = 32022147830912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4001383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250079 + ... + 250094.

Almost surely, 2^4001384 is an apocalyptic number.

It is an amenable number.

4001384 is a deficient number, since it is larger than the sum of its proper divisors (3501226).

4001384 is a wasteful number, since it uses less digits than its factorization.

4001384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500179 (or 500175 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4001384 is about 2000.3459700762. The cubic root of 4001384 is about 158.7584111112.

Adding to 4001384 its reverse (4831004), we get a palindrome (8832388).

The spelling of 4001384 in words is "four million, one thousand, three hundred eighty-four".