84720047441 has 4 divisors (see below), whose sum is σ = 84725994084. Its totient is φ = 84714100800.

The previous prime is 84720047393. The next prime is 84720047443. The reversal of 84720047441 is 14474002748.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40913557441 + 43806490000 = 202271^2 + 209300^2 .

It is a cyclic number.

It is not a de Polignac number, because 84720047441 - 2²⁶ = 84652938577 is a prime.

It is a super-4 number, since 4×84720047441⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84720047443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2951900 + ... + 2980461.

It is an arithmetic number, because the mean of its divisors is an integer number (21181498521).

Almost surely, 2^84720047441 is an apocalyptic number.

It is an amenable number.

84720047441 is a deficient number, since it is larger than the sum of its proper divisors (5946643).

84720047441 is a wasteful number, since it uses less digits than its factorization.

84720047441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5946642.

The product of its (nonzero) digits is 200704, while the sum is 41.

The spelling of 84720047441 in words is "eighty-four billion, seven hundred twenty million, forty-seven thousand, four hundred forty-one".