64441843 has 2 divisors, whose sum is σ = 64441844. Its totient is φ = 64441842.

The previous prime is 64441829. The next prime is 64441859. The reversal of 64441843 is 34814446.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64441843 is a prime.

It is a super-2 number, since 2×64441843² = 8305502258473298, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64441799 and 64441808.

It is not a weakly prime, because it can be changed into another prime (64441243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32220921 + 32220922.

It is an arithmetic number, because the mean of its divisors is an integer number (32220922).

Almost surely, 2^64441843 is an apocalyptic number.

64441843 is a deficient number, since it is larger than the sum of its proper divisors (1).

64441843 is an equidigital number, since it uses as much as digits as its factorization.

64441843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 34.

The square root of 64441843 is about 8027.5676889080. The cubic root of 64441843 is about 400.9183960081.

The spelling of 64441843 in words is "sixty-four million, four hundred forty-one thousand, eight hundred forty-three".