84441921 has 8 divisors (see below), whose sum is σ = 114497760. Its totient is φ = 55340352.

The previous prime is 84441899. The next prime is 84441937. The reversal of 84441921 is 12914448.

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

It is not a de Polignac number, because 84441921 - 2¹⁹ = 83917633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84441971) 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, 238360 + ... + 238713.

It is an arithmetic number, because the mean of its divisors is an integer number (14312220).

Almost surely, 2^84441921 is an apocalyptic number.

It is an amenable number.

84441921 is a deficient number, since it is larger than the sum of its proper divisors (30055839).

84441921 is a wasteful number, since it uses less digits than its factorization.

84441921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477135.

The product of its digits is 9216, while the sum is 33.

The square root of 84441921 is about 9189.2285312751. The cubic root of 84441921 is about 438.7185875352.

The spelling of 84441921 in words is "eighty-four million, four hundred forty-one thousand, nine hundred twenty-one".