84887441 has 2 divisors, whose sum is σ = 84887442. Its totient is φ = 84887440.

The previous prime is 84887423. The next prime is 84887449. The reversal of 84887441 is 14478848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77440000 + 7447441 = 8800^2 + 2729^2 .

It is a cyclic number.

It is not a de Polignac number, because 84887441 - 2⁶ = 84887377 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 84887392 and 84887401.

It is not a weakly prime, because it can be changed into another prime (84887449) 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, 42443720 + 42443721.

It is an arithmetic number, because the mean of its divisors is an integer number (42443721).

Almost surely, 2^84887441 is an apocalyptic number.

It is an amenable number.

84887441 is a deficient number, since it is larger than the sum of its proper divisors (1).

84887441 is an equidigital number, since it uses as much as digits as its factorization.

84887441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229376, while the sum is 44.

The square root of 84887441 is about 9213.4380662161. The cubic root of 84887441 is about 439.4888019743.

The spelling of 84887441 in words is "eighty-four million, eight hundred eighty-seven thousand, four hundred forty-one".