894112081 has 4 divisors (see below), whose sum is σ = 894174372. Its totient is φ = 894049792.

The previous prime is 894112069. The next prime is 894112099. The reversal of 894112081 is 180211498.

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 can be written as a sum of positive squares in 2 ways, for example, as 845879056 + 48233025 = 29084^2 + 6945^2 .

It is a cyclic number.

It is not a de Polignac number, because 894112081 - 2¹¹ = 894110033 is a prime.

It is a super-2 number, since 2×894112081² = 1598872826780301122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (894112001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2505 + ... + 42361.

It is an arithmetic number, because the mean of its divisors is an integer number (223543593).

Almost surely, 2^894112081 is an apocalyptic number.

894112081 is the 18912-nd centered pentagonal number.

It is an amenable number.

894112081 is a deficient number, since it is larger than the sum of its proper divisors (62291).

894112081 is a wasteful number, since it uses less digits than its factorization.

894112081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62290.

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 894112081 is about 29901.7069914077. The cubic root of 894112081 is about 963.3793233898.

The spelling of 894112081 in words is "eight hundred ninety-four million, one hundred twelve thousand, eighty-one".