84747841 has 4 divisors (see below), whose sum is σ = 84850900. Its totient is φ = 84644784.

The previous prime is 84747829. The next prime is 84747851. The reversal of 84747841 is 14874748.

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 50466816 + 34281025 = 7104^2 + 5855^2 .

It is a cyclic number.

It is not a de Polignac number, because 84747841 - 2⁷ = 84747713 is a prime.

It is a super-2 number, since 2×84747841² = 14364393108322562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84747821) 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, 50286 + ... + 51943.

It is an arithmetic number, because the mean of its divisors is an integer number (21212725).

Almost surely, 2^84747841 is an apocalyptic number.

It is an amenable number.

84747841 is a deficient number, since it is larger than the sum of its proper divisors (103059).

84747841 is a wasteful number, since it uses less digits than its factorization.

84747841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103058.

The product of its digits is 200704, while the sum is 43.

The square root of 84747841 is about 9205.8590582303. The cubic root of 84747841 is about 439.2477521838.

The spelling of 84747841 in words is "eighty-four million, seven hundred forty-seven thousand, eight hundred forty-one".