9901694771 has 4 divisors (see below), whose sum is σ = 9915661200. Its totient is φ = 9887728344.

The previous prime is 9901694767. The next prime is 9901694773. The reversal of 9901694771 is 1774961099.

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 9901694771 - 2² = 9901694767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9901694773) 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, 6982151 + ... + 6983568.

It is an arithmetic number, because the mean of its divisors is an integer number (2478915300).

Almost surely, 2^9901694771 is an apocalyptic number.

9901694771 is a deficient number, since it is larger than the sum of its proper divisors (13966429).

9901694771 is a wasteful number, since it uses less digits than its factorization.

9901694771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13966428.

The product of its (nonzero) digits is 857304, while the sum is 53.

The square root of 9901694771 is about 99507.2598909245. The cubic root of 9901694771 is about 2147.3516893587.

The spelling of 9901694771 in words is "nine billion, nine hundred one million, six hundred ninety-four thousand, seven hundred seventy-one".