64389529 has 2 divisors, whose sum is σ = 64389530. Its totient is φ = 64389528.

The previous prime is 64389527. The next prime is 64389539. The reversal of 64389529 is 92598346.

64389529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33085504 + 31304025 = 5752^2 + 5595^2 .

It is a cyclic number.

It is not a de Polignac number, because 64389529 - 2¹ = 64389527 is a prime.

It is a super-2 number, since 2×64389529² = 8292022889683682, which contains 22 as substring.

Together with 64389527, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64389527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32194764 + 32194765.

It is an arithmetic number, because the mean of its divisors is an integer number (32194765).

Almost surely, 2^64389529 is an apocalyptic number.

It is an amenable number.

64389529 is a deficient number, since it is larger than the sum of its proper divisors (1).

64389529 is an equidigital number, since it uses as much as digits as its factorization.

64389529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 46.

The square root of 64389529 is about 8024.3086306547. The cubic root of 64389529 is about 400.8098778878.

The spelling of 64389529 in words is "sixty-four million, three hundred eighty-nine thousand, five hundred twenty-nine".