4000079 has 2 divisors, whose sum is σ = 4000080. Its totient is φ = 4000078.

The previous prime is 4000067. The next prime is 4000081. The reversal of 4000079 is 9700004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4000079 - 2⁴ = 4000063 is a prime.

Together with 4000081, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4000079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4000039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000039 + 2000040.

It is an arithmetic number, because the mean of its divisors is an integer number (2000040).

Almost surely, 2^4000079 is an apocalyptic number.

4000079 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000079 is an equidigital number, since it uses as much as digits as its factorization.

4000079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 4000079 is about 2000.0197499025. The cubic root of 4000079 is about 158.7411502290.

It can be divided in two parts, 400007 and 9, that multiplied together give a palindrome (3600063).

The spelling of 4000079 in words is "four million, seventy-nine", and thus it is an aban number.