4396729 has 2 divisors, whose sum is σ = 4396730. Its totient is φ = 4396728.

The previous prime is 4396687. The next prime is 4396751. The reversal of 4396729 is 9276934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2839225 + 1557504 = 1685^2 + 1248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4396729 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4396691 and 4396700.

It is not a weakly prime, because it can be changed into another prime (4396789) 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, 2198364 + 2198365.

It is an arithmetic number, because the mean of its divisors is an integer number (2198365).

Almost surely, 2^4396729 is an apocalyptic number.

It is an amenable number.

4396729 is a deficient number, since it is larger than the sum of its proper divisors (1).

4396729 is an equidigital number, since it uses as much as digits as its factorization.

4396729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 40.

The square root of 4396729 is about 2096.8378573462. The cubic root of 4396729 is about 163.8236379949.

The spelling of 4396729 in words is "four million, three hundred ninety-six thousand, seven hundred twenty-nine".