4006729 has 2 divisors, whose sum is σ = 4006730. Its totient is φ = 4006728.

The previous prime is 4006721. The next prime is 4006741. The reversal of 4006729 is 9276004.

4006729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2449225 + 1557504 = 1565^2 + 1248^2 .

It is a cyclic number.

It is not a de Polignac number, because 4006729 - 2³ = 4006721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4006697 and 4006706.

It is not a weakly prime, because it can be changed into another prime (4006721) 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 as a sum of consecutive naturals, namely, 2003364 + 2003365.

It is an arithmetic number, because the mean of its divisors is an integer number (2003365).

Almost surely, 2^4006729 is an apocalyptic number.

It is an amenable number.

4006729 is a deficient number, since it is larger than the sum of its proper divisors (1).

4006729 is an equidigital number, since it uses as much as digits as its factorization.

4006729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 4006729 is about 2001.6815431032. The cubic root of 4006729 is about 158.8290688431.

The spelling of 4006729 in words is "four million, six thousand, seven hundred twenty-nine".