4007081 has 8 divisors (see below), whose sum is σ = 4542720. Its totient is φ = 3503952.

The previous prime is 4007077. The next prime is 4007099. The reversal of 4007081 is 1807004.

It is a happy number.

4007081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4007081 - 2² = 4007077 is a prime.

It is a super-2 number, since 2×4007081² = 32113396281122, which contains 22 as substring.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (4007021) 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 in 7 ways as a sum of consecutive naturals, for example, 7865 + ... + 8358.

It is an arithmetic number, because the mean of its divisors is an integer number (567840).

Almost surely, 2^4007081 is an apocalyptic number.

It is an amenable number.

4007081 is a deficient number, since it is larger than the sum of its proper divisors (535639).

4007081 is a wasteful number, since it uses less digits than its factorization.

4007081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16255.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 4007081 is about 2001.7694672464. The cubic root of 4007081 is about 158.8337198685.

The spelling of 4007081 in words is "four million, seven thousand, eighty-one".