84418541 has 2 divisors, whose sum is σ = 84418542. Its totient is φ = 84418540.

The previous prime is 84418517. The next prime is 84418567. The reversal of 84418541 is 14581448.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64802500 + 19616041 = 8050^2 + 4429^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84418541 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84418511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42209270 + 42209271.

It is an arithmetic number, because the mean of its divisors is an integer number (42209271).

Almost surely, 2^84418541 is an apocalyptic number.

It is an amenable number.

84418541 is a deficient number, since it is larger than the sum of its proper divisors (1).

84418541 is an equidigital number, since it uses as much as digits as its factorization.

84418541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20480, while the sum is 35.

The square root of 84418541 is about 9187.9563015940. The cubic root of 84418541 is about 438.6780934802.

Adding to 84418541 its reverse (14581448), we get a palindrome (98999989).

The spelling of 84418541 in words is "eighty-four million, four hundred eighteen thousand, five hundred forty-one".