84704421 has 8 divisors (see below), whose sum is σ = 119582784. Its totient is φ = 53147840.

The previous prime is 84704407. The next prime is 84704429. The reversal of 84704421 is 12440748.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84704421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84704429) 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, 830385 + ... + 830486.

It is an arithmetic number, because the mean of its divisors is an integer number (14947848).

Almost surely, 2^84704421 is an apocalyptic number.

It is an amenable number.

84704421 is a deficient number, since it is larger than the sum of its proper divisors (34878363).

84704421 is a wasteful number, since it uses less digits than its factorization.

84704421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660891.

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 84704421 is about 9203.5004753626. The cubic root of 84704421 is about 439.1727241348.

The spelling of 84704421 in words is "eighty-four million, seven hundred four thousand, four hundred twenty-one".