9979481 has 4 divisors (see below), whose sum is σ = 10091700. Its totient is φ = 9867264.

The previous prime is 9979471. The next prime is 9979511. The reversal of 9979481 is 1849799.

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

It can be written as a sum of positive squares in 2 ways, for example, as 737881 + 9241600 = 859^2 + 3040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9979481 is a prime.

It is a super-2 number, since 2×9979481² = 199180082058722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9979471) 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, 55976 + ... + 56153.

It is an arithmetic number, because the mean of its divisors is an integer number (2522925).

Almost surely, 2^9979481 is an apocalyptic number.

It is an amenable number.

9979481 is a deficient number, since it is larger than the sum of its proper divisors (112219).

9979481 is a wasteful number, since it uses less digits than its factorization.

9979481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112218.

The product of its digits is 163296, while the sum is 47.

The square root of 9979481 is about 3159.0316554286. The cubic root of 9979481 is about 215.2960119501.

The spelling of 9979481 in words is "nine million, nine hundred seventy-nine thousand, four hundred eighty-one".