9894349771 has 4 divisors (see below), whose sum is σ = 9895043752. Its totient is φ = 9893655792.

The previous prime is 9894349711. The next prime is 9894349781. The reversal of 9894349771 is 1779434989.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9894349771 - 2²⁷ = 9760132043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9894349711) 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, 325146 + ... + 354271.

It is an arithmetic number, because the mean of its divisors is an integer number (2473760938).

Almost surely, 2^9894349771 is an apocalyptic number.

9894349771 is a deficient number, since it is larger than the sum of its proper divisors (693981).

9894349771 is a wasteful number, since it uses less digits than its factorization.

9894349771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693980.

The product of its digits is 13716864, while the sum is 61.

The square root of 9894349771 is about 99470.3461892035. The cubic root of 9894349771 is about 2146.8205951014.

The spelling of 9894349771 in words is "nine billion, eight hundred ninety-four million, three hundred forty-nine thousand, seven hundred seventy-one".