4004012 has 6 divisors (see below), whose sum is σ = 7007028. Its totient is φ = 2002004.

The previous prime is 4004009. The next prime is 4004023. The reversal of 4004012 is 2104004.

4004012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×4004012² = 32064224192288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4003984 and 4004002.

It is an unprimeable number.

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, 500498 + ... + 500505.

It is an arithmetic number, because the mean of its divisors is an integer number (1167838).

Almost surely, 2^4004012 is an apocalyptic number.

It is an amenable number.

4004012 is a deficient number, since it is larger than the sum of its proper divisors (3003016).

4004012 is a wasteful number, since it uses less digits than its factorization.

4004012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001007 (or 1001005 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 4004012 is about 2001.0027486238. The cubic root of 4004012 is about 158.7931595714.

Subtracting from 4004012 its sum of digits (11), we obtain a square (4004001 = 2001²).

Adding to 4004012 its reverse (2104004), we get a palindrome (6108016).

The spelling of 4004012 in words is "four million, four thousand, twelve".