84444447 has 8 divisors (see below), whose sum is σ = 113686144. Its totient is φ = 55749528.

The previous prime is 84444439. The next prime is 84444463. The reversal of 84444447 is 74444448.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84444447 - 2³ = 84444439 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 (84444467) 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 in 7 ways as a sum of consecutive naturals, for example, 136333 + ... + 136950.

It is an arithmetic number, because the mean of its divisors is an integer number (14210768).

Almost surely, 2^84444447 is an apocalyptic number.

84444447 is a deficient number, since it is larger than the sum of its proper divisors (29241697).

84444447 is a wasteful number, since it uses less digits than its factorization.

84444447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273389.

The product of its digits is 229376, while the sum is 39.

The square root of 84444447 is about 9189.3659737764. The cubic root of 84444447 is about 438.7229621085.

Subtracting from 84444447 its reverse (74444448), we obtain a palindrome (9999999).

The spelling of 84444447 in words is "eighty-four million, four hundred forty-four thousand, four hundred forty-seven".