84384805 has 4 divisors (see below), whose sum is σ = 101261772. Its totient is φ = 67507840.

The previous prime is 84384803. The next prime is 84384841. The reversal of 84384805 is 50848348.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29964676 + 54420129 = 5474^2 + 7377^2 .

It is not a de Polignac number, because 84384805 - 2¹ = 84384803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84384803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8438476 + ... + 8438485.

It is an arithmetic number, because the mean of its divisors is an integer number (25315443).

Almost surely, 2^84384805 is an apocalyptic number.

It is an amenable number.

84384805 is a deficient number, since it is larger than the sum of its proper divisors (16876967).

84384805 is a wasteful number, since it uses less digits than its factorization.

84384805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16876966.

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 84384805 is about 9186.1202365308. The cubic root of 84384805 is about 438.6196496999.

The spelling of 84384805 in words is "eighty-four million, three hundred eighty-four thousand, eight hundred five".