84409424 has 20 divisors (see below), whose sum is σ = 178411200. Its totient is φ = 38367840.

The previous prime is 84409417. The next prime is 84409439. The reversal of 84409424 is 42490448.

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 3 ways as a sum of consecutive naturals, for example, 239624 + ... + 239975.

It is an arithmetic number, because the mean of its divisors is an integer number (8920560).

Almost surely, 2^84409424 is an apocalyptic number.

It is an amenable number.

84409424 is an abundant number, since it is smaller than the sum of its proper divisors (94001776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84409424 is a wasteful number, since it uses less digits than its factorization.

84409424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479618 (or 479612 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 84409424 is about 9187.4601495734. The cubic root of 84409424 is about 438.6623008510.

The spelling of 84409424 in words is "eighty-four million, four hundred nine thousand, four hundred twenty-four".