84792198481 has 3 divisors (see below), whose sum is σ = 84792489673. Its totient is φ = 84791907290.

The previous prime is 84792198433. The next prime is 84792198487. The reversal of 84792198481 is 18489129748.

The square root of 84792198481 is 291191.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 84792198481 - 2²⁷ = 84657980753 is a prime.

It is a super-2 number, since 2×84792198481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84792198487) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 145596 + ... + 436786.

Almost surely, 2^84792198481 is an apocalyptic number.

84792198481 is the 291191-st square number.

84792198481 is the 145596-th centered octagonal number.

It is an amenable number.

84792198481 is a deficient number, since it is larger than the sum of its proper divisors (291192).

84792198481 is an frugal number, since it uses more digits than its factorization.

84792198481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582382 (or 291191 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 61.

The spelling of 84792198481 in words is "eighty-four billion, seven hundred ninety-two million, one hundred ninety-eight thousand, four hundred eighty-one".