9971727 has 8 divisors (see below), whose sum is σ = 13478064. Its totient is φ = 6556608.

The previous prime is 9971711. The next prime is 9971729. The reversal of 9971727 is 7271799.

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

It is not a de Polignac number, because 9971727 - 2⁴ = 9971711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9971729) 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, 22548 + ... + 22985.

It is an arithmetic number, because the mean of its divisors is an integer number (1684758).

Almost surely, 2^9971727 is an apocalyptic number.

9971727 is a deficient number, since it is larger than the sum of its proper divisors (3506337).

9971727 is a wasteful number, since it uses less digits than its factorization.

9971727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45609.

The product of its digits is 55566, while the sum is 42.

The square root of 9971727 is about 3157.8041421215. The cubic root of 9971727 is about 215.2402362427.

The spelling of 9971727 in words is "nine million, nine hundred seventy-one thousand, seven hundred twenty-seven".