84047441 has 2 divisors, whose sum is σ = 84047442. Its totient is φ = 84047440.

The previous prime is 84047429. The next prime is 84047443. The reversal of 84047441 is 14474048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44609041 + 39438400 = 6679^2 + 6280^2 .

It is a cyclic number.

It is not a de Polignac number, because 84047441 - 2²⁶ = 16938577 is a prime.

Together with 84047443, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 84047398 and 84047407.

It is not a weakly prime, because it can be changed into another prime (84047443) 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, 42023720 + 42023721.

It is an arithmetic number, because the mean of its divisors is an integer number (42023721).

Almost surely, 2^84047441 is an apocalyptic number.

It is an amenable number.

84047441 is a deficient number, since it is larger than the sum of its proper divisors (1).

84047441 is an equidigital number, since it uses as much as digits as its factorization.

84047441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 32.

The square root of 84047441 is about 9167.7391433221. The cubic root of 84047441 is about 438.0343463958.

The spelling of 84047441 in words is "eighty-four million, forty-seven thousand, four hundred forty-one".