64394441 has 2 divisors, whose sum is σ = 64394442. Its totient is φ = 64394440.

The previous prime is 64394431. The next prime is 64394459. The reversal of 64394441 is 14449346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38180041 + 26214400 = 6179^2 + 5120^2 .

It is a cyclic number.

It is not a de Polignac number, because 64394441 - 2⁶ = 64394377 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64394431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32197220 + 32197221.

It is an arithmetic number, because the mean of its divisors is an integer number (32197221).

Almost surely, 2^64394441 is an apocalyptic number.

It is an amenable number.

64394441 is a deficient number, since it is larger than the sum of its proper divisors (1).

64394441 is an equidigital number, since it uses as much as digits as its factorization.

64394441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 64394441 is about 8024.6146948000. The cubic root of 64394441 is about 400.8200696488.

The spelling of 64394441 in words is "sixty-four million, three hundred ninety-four thousand, four hundred forty-one".