4004156 has 12 divisors (see below), whose sum is σ = 7546392. Its totient is φ = 1848048.

The previous prime is 4004141. The next prime is 4004179. The reversal of 4004156 is 6514004.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38450 + ... + 38553.

It is an arithmetic number, because the mean of its divisors is an integer number (628866).

Almost surely, 2^4004156 is an apocalyptic number.

It is an amenable number.

4004156 is a deficient number, since it is larger than the sum of its proper divisors (3542236).

4004156 is a wasteful number, since it uses less digits than its factorization.

4004156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77020 (or 77018 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 4004156 is about 2001.0387302599. The cubic root of 4004156 is about 158.7950631572.

The spelling of 4004156 in words is "four million, four thousand, one hundred fifty-six".