84004445 has 16 divisors (see below), whose sum is σ = 119180160. Its totient is φ = 55616064.

The previous prime is 84004423. The next prime is 84004457. The reversal of 84004445 is 54440048.

It is not a de Polignac number, because 84004445 - 2¹⁴ = 83988061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40367 + ... + 42396.

It is an arithmetic number, because the mean of its divisors is an integer number (7448760).

Almost surely, 2^84004445 is an apocalyptic number.

It is an amenable number.

84004445 is a deficient number, since it is larger than the sum of its proper divisors (35175715).

84004445 is a wasteful number, since it uses less digits than its factorization.

84004445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82804.

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 84004445 is about 9165.3938813343. The cubic root of 84004445 is about 437.9596388377.

The spelling of 84004445 in words is "eighty-four million, four thousand, four hundred forty-five".