9799971 has 8 divisors (see below), whose sum is σ = 13112400. Its totient is φ = 6510432.

The previous prime is 9799969. The next prime is 9799987. The reversal of 9799971 is 1799979.

9799971 is nontrivially palindromic in base 11.

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

It is not a de Polignac number, because 9799971 - 2¹ = 9799969 is a prime.

9799971 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9799271) 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, 4696 + ... + 6453.

It is an arithmetic number, because the mean of its divisors is an integer number (1639050).

Almost surely, 2^9799971 is an apocalyptic number.

9799971 is a deficient number, since it is larger than the sum of its proper divisors (3312429).

9799971 is a wasteful number, since it uses less digits than its factorization.

9799971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11445.

The product of its digits is 321489, while the sum is 51.

The square root of 9799971 is about 3130.4905366412. The cubic root of 9799971 is about 213.9972850268.

The spelling of 9799971 in words is "nine million, seven hundred ninety-nine thousand, nine hundred seventy-one".