9934491671 has 32 divisors (see below), whose sum is σ = 11519988480. Its totient is φ = 8485392384.

The previous prime is 9934491653. The next prime is 9934491737. The reversal of 9934491671 is 1761944399.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9934491671 is a prime.

It is a super-2 number, since 2×9934491671² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9934491271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6274946 + ... + 6276528.

It is an arithmetic number, because the mean of its divisors is an integer number (359999640).

Almost surely, 2^9934491671 is an apocalyptic number.

9934491671 is a deficient number, since it is larger than the sum of its proper divisors (1585496809).

9934491671 is a wasteful number, since it uses less digits than its factorization.

9934491671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075.

The product of its digits is 1469664, while the sum is 53.

The square root of 9934491671 is about 99671.9201731360. The cubic root of 9934491671 is about 2149.7199325833.

The spelling of 9934491671 in words is "nine billion, nine hundred thirty-four million, four hundred ninety-one thousand, six hundred seventy-one".