64334429 has 2 divisors, whose sum is σ = 64334430. Its totient is φ = 64334428.

The previous prime is 64334423. The next prime is 64334447. The reversal of 64334429 is 92443346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43586404 + 20748025 = 6602^2 + 4555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64334429 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64334423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32167214 + 32167215.

It is an arithmetic number, because the mean of its divisors is an integer number (32167215).

Almost surely, 2^64334429 is an apocalyptic number.

It is an amenable number.

64334429 is a deficient number, since it is larger than the sum of its proper divisors (1).

64334429 is an equidigital number, since it uses as much as digits as its factorization.

64334429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 35.

The square root of 64334429 is about 8020.8745782489. The cubic root of 64334429 is about 400.6955170226.

The spelling of 64334429 in words is "sixty-four million, three hundred thirty-four thousand, four hundred twenty-nine".