84133481 has 4 divisors (see below), whose sum is σ = 84747732. Its totient is φ = 83519232.

The previous prime is 84133477. The next prime is 84133513. The reversal of 84133481 is 18433148.

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 71995225 + 12138256 = 8485^2 + 3484^2 .

It is a cyclic number.

It is not a de Polignac number, because 84133481 - 2² = 84133477 is a prime.

It is a super-2 number, since 2×84133481² = 14156885250354722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84133421) 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, 306920 + ... + 307193.

It is an arithmetic number, because the mean of its divisors is an integer number (21186933).

Almost surely, 2^84133481 is an apocalyptic number.

It is an amenable number.

84133481 is a deficient number, since it is larger than the sum of its proper divisors (614251).

84133481 is a wasteful number, since it uses less digits than its factorization.

84133481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614250.

The product of its digits is 9216, while the sum is 32.

The square root of 84133481 is about 9172.4304848824. The cubic root of 84133481 is about 438.1837684419.

The spelling of 84133481 in words is "eighty-four million, one hundred thirty-three thousand, four hundred eighty-one".