9971306 has 4 divisors (see below), whose sum is σ = 14956962. Its totient is φ = 4985652.

The previous prime is 9971303. The next prime is 9971341. The reversal of 9971306 is 6031799.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6713281 + 3258025 = 2591^2 + 1805^2 .

It is not an unprimeable number, because it can be changed into a prime (9971303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2492825 + ... + 2492828.

Almost surely, 2^9971306 is an apocalyptic number.

9971306 is a deficient number, since it is larger than the sum of its proper divisors (4985656).

9971306 is a wasteful number, since it uses less digits than its factorization.

9971306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4985655.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 9971306 is about 3157.7374811722. The cubic root of 9971306 is about 215.2372070979.

The spelling of 9971306 in words is "nine million, nine hundred seventy-one thousand, three hundred six".