3966455729 has 2 divisors, whose sum is σ = 3966455730. Its totient is φ = 3966455728.

The previous prime is 3966455723. The next prime is 3966455741. The reversal of 3966455729 is 9275546693.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3729911329 + 236544400 = 61073^2 + 15380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3966455729 is a prime.

It is not a weakly prime, because it can be changed into another prime (3966455723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1983227864 + 1983227865.

It is an arithmetic number, because the mean of its divisors is an integer number (1983227865).

Almost surely, 2^3966455729 is an apocalyptic number.

It is an amenable number.

3966455729 is a deficient number, since it is larger than the sum of its proper divisors (1).

3966455729 is an equidigital number, since it uses as much as digits as its factorization.

3966455729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12247200, while the sum is 56.

The square root of 3966455729 is about 62979.8041359292. The cubic root of 3966455729 is about 1582.9512389560.

The spelling of 3966455729 in words is "three billion, nine hundred sixty-six million, four hundred fifty-five thousand, seven hundred twenty-nine".