84474673921 has 6 divisors (see below), whose sum is σ = 92852327666. Its totient is φ = 76795158000.

The previous prime is 84474673901. The next prime is 84474673937. The reversal of 84474673921 is 12937647448.

It can be written as a sum of positive squares in only one way, i.e., 70423890625 + 14050783296 = 265375^2 + 118536^2 .

It is not a de Polignac number, because 84474673921 - 2²⁹ = 83937803009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84474673901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 349068780 + ... + 349069021.

Almost surely, 2^84474673921 is an apocalyptic number.

It is an amenable number.

84474673921 is a deficient number, since it is larger than the sum of its proper divisors (8377653745).

84474673921 is a wasteful number, since it uses less digits than its factorization.

84474673921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698137823 (or 698137812 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 55.

The spelling of 84474673921 in words is "eighty-four billion, four hundred seventy-four million, six hundred seventy-three thousand, nine hundred twenty-one".