84448521 has 16 divisors (see below), whose sum is σ = 131694400. Its totient is φ = 53335584.

The previous prime is 84448489. The next prime is 84448589. The reversal of 84448521 is 12584448.

It is not a de Polignac number, because 84448521 - 2⁵ = 84448489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84448591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81796 + ... + 82821.

It is an arithmetic number, because the mean of its divisors is an integer number (8230900).

Almost surely, 2^84448521 is an apocalyptic number.

It is an amenable number.

84448521 is a deficient number, since it is larger than the sum of its proper divisors (47245879).

84448521 is a wasteful number, since it uses less digits than its factorization.

84448521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164645 (or 164639 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 84448521 is about 9189.5876403678. The cubic root of 84448521 is about 438.7300173528.

The spelling of 84448521 in words is "eighty-four million, four hundred forty-eight thousand, five hundred twenty-one".