64203389 has 2 divisors, whose sum is σ = 64203390. Its totient is φ = 64203388.

The previous prime is 64203341. The next prime is 64203397. The reversal of 64203389 is 98330246.

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., 50268100 + 13935289 = 7090^2 + 3733^2 .

It is a cyclic number.

It is not a de Polignac number, because 64203389 - 2⁸ = 64203133 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 (64203319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32101694 + 32101695.

It is an arithmetic number, because the mean of its divisors is an integer number (32101695).

Almost surely, 2^64203389 is an apocalyptic number.

It is an amenable number.

64203389 is a deficient number, since it is larger than the sum of its proper divisors (1).

64203389 is an equidigital number, since it uses as much as digits as its factorization.

64203389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 64203389 is about 8012.7017291298. The cubic root of 64203389 is about 400.4232790125.

The spelling of 64203389 in words is "sixty-four million, two hundred three thousand, three hundred eighty-nine".