9994401271 has 16 divisors (see below), whose sum is σ = 10433167360. Its totient is φ = 9563430240.

The previous prime is 9994401257. The next prime is 9994401281. The reversal of 9994401271 is 1721044999.

It is a cyclic number.

It is not a de Polignac number, because 9994401271 - 2⁷ = 9994401143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9994401281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1204525 + ... + 1212793.

It is an arithmetic number, because the mean of its divisors is an integer number (652072960).

Almost surely, 2^9994401271 is an apocalyptic number.

9994401271 is a deficient number, since it is larger than the sum of its proper divisors (438766089).

9994401271 is a wasteful number, since it uses less digits than its factorization.

9994401271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8734.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 9994401271 is about 99972.0024356820. The cubic root of 9994401271 is about 2154.0325451066.

The spelling of 9994401271 in words is "nine billion, nine hundred ninety-four million, four hundred one thousand, two hundred seventy-one".