4000679 has 2 divisors, whose sum is σ = 4000680. Its totient is φ = 4000678.

The previous prime is 4000673. The next prime is 4000691. The reversal of 4000679 is 9760004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4000679 - 2¹² = 3996583 is a prime.

It is a super-2 number, since 2×4000679² = 32010864922082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4000673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000339 + 2000340.

It is an arithmetic number, because the mean of its divisors is an integer number (2000340).

Almost surely, 2^4000679 is an apocalyptic number.

4000679 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000679 is an equidigital number, since it uses as much as digits as its factorization.

4000679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 4000679 is about 2000.1697427968. The cubic root of 4000679 is about 158.7490867329.

The spelling of 4000679 in words is "four million, six hundred seventy-nine", and thus it is an aban number.