84043601 has 2 divisors, whose sum is σ = 84043602. Its totient is φ = 84043600.

The previous prime is 84043577. The next prime is 84043639. The reversal of 84043601 is 10634048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45900625 + 38142976 = 6775^2 + 6176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84043601 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (84043651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42021800 + 42021801.

It is an arithmetic number, because the mean of its divisors is an integer number (42021801).

Almost surely, 2^84043601 is an apocalyptic number.

It is an amenable number.

84043601 is a deficient number, since it is larger than the sum of its proper divisors (1).

84043601 is an equidigital number, since it uses as much as digits as its factorization.

84043601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 84043601 is about 9167.5297108872. The cubic root of 84043601 is about 438.0276752527.

Adding to 84043601 its reverse (10634048), we get a palindrome (94677649).

The spelling of 84043601 in words is "eighty-four million, forty-three thousand, six hundred one".