64309429 has 2 divisors, whose sum is σ = 64309430. Its totient is φ = 64309428.

The previous prime is 64309417. The next prime is 64309447. The reversal of 64309429 is 92490346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54730404 + 9579025 = 7398^2 + 3095^2 .

It is a cyclic number.

It is not a de Polignac number, because 64309429 - 2⁹ = 64308917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64309459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32154714 + 32154715.

It is an arithmetic number, because the mean of its divisors is an integer number (32154715).

Almost surely, 2^64309429 is an apocalyptic number.

It is an amenable number.

64309429 is a deficient number, since it is larger than the sum of its proper divisors (1).

64309429 is an equidigital number, since it uses as much as digits as its factorization.

64309429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 64309429 is about 8019.3159932752. The cubic root of 64309429 is about 400.6436076177.

The spelling of 64309429 in words is "sixty-four million, three hundred nine thousand, four hundred twenty-nine".