84391449 has 8 divisors (see below), whose sum is σ = 112920672. Its totient is φ = 56061600.

The previous prime is 84391403. The next prime is 84391453. The reversal of 84391449 is 94419348.

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

It is not a de Polignac number, because 84391449 - 2⁸ = 84391193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84391449.

It is not an unprimeable number, because it can be changed into a prime (84391469) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 48852 + ... + 50549.

It is an arithmetic number, because the mean of its divisors is an integer number (14115084).

Almost surely, 2^84391449 is an apocalyptic number.

It is an amenable number.

84391449 is a deficient number, since it is larger than the sum of its proper divisors (28529223).

84391449 is a wasteful number, since it uses less digits than its factorization.

84391449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99687.

The product of its digits is 124416, while the sum is 42.

The square root of 84391449 is about 9186.4818619535. The cubic root of 84391449 is about 438.6311609053.

The spelling of 84391449 in words is "eighty-four million, three hundred ninety-one thousand, four hundred forty-nine".