4000067 has 2 divisors, whose sum is σ = 4000068. Its totient is φ = 4000066.

The previous prime is 4000063. The next prime is 4000079. The reversal of 4000067 is 7600004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4000067 - 2² = 4000063 is a prime.

It is not a weakly prime, because it can be changed into another prime (4000063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000033 + 2000034.

It is an arithmetic number, because the mean of its divisors is an integer number (2000034).

Almost surely, 2^4000067 is an apocalyptic number.

4000067 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000067 is an equidigital number, since it uses as much as digits as its factorization.

4000067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 4000067 is about 2000.0167499299. The cubic root of 4000067 is about 158.7409914908.

The spelling of 4000067 in words is "four million, sixty-seven", and thus it is an aban number.