9894343841 has 4 divisors (see below), whose sum is σ = 10415098800. Its totient is φ = 9373588884.

The previous prime is 9894343807. The next prime is 9894343889. The reversal of 9894343841 is 1483434989.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1483434989 = 8009 ⋅185221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9894343841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9894343441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260377451 + ... + 260377488.

It is an arithmetic number, because the mean of its divisors is an integer number (2603774700).

Almost surely, 2^9894343841 is an apocalyptic number.

It is an amenable number.

9894343841 is a deficient number, since it is larger than the sum of its proper divisors (520754959).

9894343841 is a wasteful number, since it uses less digits than its factorization.

9894343841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520754958.

The product of its digits is 2985984, while the sum is 53.

The square root of 9894343841 is about 99470.3163813205. The cubic root of 9894343841 is about 2146.8201662153.

The spelling of 9894343841 in words is "nine billion, eight hundred ninety-four million, three hundred forty-three thousand, eight hundred forty-one".