8406695729 has 2 divisors, whose sum is σ = 8406695730. Its totient is φ = 8406695728.

The previous prime is 8406695683. The next prime is 8406695767. The reversal of 8406695729 is 9275966048.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7352719504 + 1053976225 = 85748^2 + 32465^2 .

It is a cyclic number.

It is not a de Polignac number, because 8406695729 - 2¹² = 8406691633 is a prime.

It is not a weakly prime, because it can be changed into another prime (8406695629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4203347864 + 4203347865.

It is an arithmetic number, because the mean of its divisors is an integer number (4203347865).

Almost surely, 2^8406695729 is an apocalyptic number.

It is an amenable number.

8406695729 is a deficient number, since it is larger than the sum of its proper divisors (1).

8406695729 is an equidigital number, since it uses as much as digits as its factorization.

8406695729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The square root of 8406695729 is about 91688.0348191627. The cubic root of 8406695729 is about 2033.3326903847.

The spelling of 8406695729 in words is "eight billion, four hundred six million, six hundred ninety-five thousand, seven hundred twenty-nine".