84541447 has 2 divisors, whose sum is σ = 84541448. Its totient is φ = 84541446.

The previous prime is 84541421. The next prime is 84541481. The reversal of 84541447 is 74414548.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84541447 - 2⁷ = 84541319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84541147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42270723 + 42270724.

It is an arithmetic number, because the mean of its divisors is an integer number (42270724).

Almost surely, 2^84541447 is an apocalyptic number.

84541447 is a deficient number, since it is larger than the sum of its proper divisors (1).

84541447 is an equidigital number, since it uses as much as digits as its factorization.

84541447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 37.

The square root of 84541447 is about 9194.6422986433. The cubic root of 84541447 is about 438.8908825371.

The spelling of 84541447 in words is "eighty-four million, five hundred forty-one thousand, four hundred forty-seven".