9934431691 has 8 divisors (see below), whose sum is σ = 9960397200. Its totient is φ = 9908487168.

The previous prime is 9934431673. The next prime is 9934431721. The reversal of 9934431691 is 1961344399.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9934431691 - 2²⁹ = 9397560779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9934431631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1420395 + ... + 1427371.

It is an arithmetic number, because the mean of its divisors is an integer number (1245049650).

Almost surely, 2^9934431691 is an apocalyptic number.

9934431691 is a deficient number, since it is larger than the sum of its proper divisors (25965509).

9934431691 is a wasteful number, since it uses less digits than its factorization.

9934431691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10493.

The product of its digits is 629856, while the sum is 49.

The square root of 9934431691 is about 99671.6192855318. The cubic root of 9934431691 is about 2149.7156062267.

The spelling of 9934431691 in words is "nine billion, nine hundred thirty-four million, four hundred thirty-one thousand, six hundred ninety-one".