84089441 has 2 divisors, whose sum is σ = 84089442. Its totient is φ = 84089440.

The previous prime is 84089431. The next prime is 84089461. The reversal of 84089441 is 14498048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79138816 + 4950625 = 8896^2 + 2225^2 .

It is a cyclic number.

It is not a de Polignac number, because 84089441 - 2⁶ = 84089377 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 = 84089395 and 84089404.

It is not a weakly prime, because it can be changed into another prime (84089431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42044720 + 42044721.

It is an arithmetic number, because the mean of its divisors is an integer number (42044721).

Almost surely, 2^84089441 is an apocalyptic number.

It is an amenable number.

84089441 is a deficient number, since it is larger than the sum of its proper divisors (1).

84089441 is an equidigital number, since it uses as much as digits as its factorization.

84089441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 84089441 is about 9170.0294983168. The cubic root of 84089441 is about 438.1072987612.

The spelling of 84089441 in words is "eighty-four million, eighty-nine thousand, four hundred forty-one".