9979331 has 4 divisors (see below), whose sum is σ = 9986472. Its totient is φ = 9972192.

The previous prime is 9979327. The next prime is 9979337. The reversal of 9979331 is 1339799.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1339799 = 67 ⋅19997.

It is a cyclic number.

It is not a de Polignac number, because 9979331 - 2² = 9979327 is a prime.

It is a super-2 number, since 2×9979331² = 199174094415122, which contains 22 as substring.

It is a d-powerful number, because it can be written as 9⁵ + 9⁷ + 7² + 9⁷ + 3¹¹ + 3¹¹ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9979337) 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, 710 + ... + 4523.

It is an arithmetic number, because the mean of its divisors is an integer number (2496618).

Almost surely, 2^9979331 is an apocalyptic number.

9979331 is a deficient number, since it is larger than the sum of its proper divisors (7141).

9979331 is a wasteful number, since it uses less digits than its factorization.

9979331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140.

The product of its digits is 45927, while the sum is 41.

The square root of 9979331 is about 3159.0079138869. The cubic root of 9979331 is about 215.2949332513.

The spelling of 9979331 in words is "nine million, nine hundred seventy-nine thousand, three hundred thirty-one".