844840089 has 12 divisors (see below), whose sum is σ = 1220683776. Its totient is φ = 563060952.

The previous prime is 844840081. The next prime is 844840127. The reversal of 844840089 is 980048448.

It is not a de Polignac number, because 844840089 - 2³ = 844840081 is a prime.

It is a super-3 number, since 3×844840089³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (844840081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23872 + ... + 47534.

It is an arithmetic number, because the mean of its divisors is an integer number (101723648).

Almost surely, 2^844840089 is an apocalyptic number.

It is an amenable number.

844840089 is a deficient number, since it is larger than the sum of its proper divisors (375843687).

844840089 is a wasteful number, since it uses less digits than its factorization.

844840089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27636 (or 27633 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 844840089 is about 29066.1330245356. The cubic root of 844840089 is about 945.3475533566.

The spelling of 844840089 in words is "eight hundred forty-four million, eight hundred forty thousand, eighty-nine".