84506447 has 2 divisors, whose sum is σ = 84506448. Its totient is φ = 84506446.

The previous prime is 84506431. The next prime is 84506459. The reversal of 84506447 is 74460548.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84506447 - 2⁴ = 84506431 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84506447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84506407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42253223 + 42253224.

It is an arithmetic number, because the mean of its divisors is an integer number (42253224).

Almost surely, 2^84506447 is an apocalyptic number.

84506447 is a deficient number, since it is larger than the sum of its proper divisors (1).

84506447 is an equidigital number, since it uses as much as digits as its factorization.

84506447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 84506447 is about 9192.7388193073. The cubic root of 84506447 is about 438.8303075104.

The spelling of 84506447 in words is "eighty-four million, five hundred six thousand, four hundred forty-seven".