64438853 has 2 divisors, whose sum is σ = 64438854. Its totient is φ = 64438852.

The previous prime is 64438849. The next prime is 64438873. The reversal of 64438853 is 35883446.

It is a happy number.

64438853 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., 60248644 + 4190209 = 7762^2 + 2047^2 .

It is a cyclic number.

It is not a de Polignac number, because 64438853 - 2² = 64438849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64438853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64438813) 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, 32219426 + 32219427.

It is an arithmetic number, because the mean of its divisors is an integer number (32219427).

Almost surely, 2^64438853 is an apocalyptic number.

It is an amenable number.

64438853 is a deficient number, since it is larger than the sum of its proper divisors (1).

64438853 is an equidigital number, since it uses as much as digits as its factorization.

64438853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 41.

The square root of 64438853 is about 8027.3814535003. The cubic root of 64438853 is about 400.9121952516.

The spelling of 64438853 in words is "sixty-four million, four hundred thirty-eight thousand, eight hundred fifty-three".