9976813 has 12 divisors (see below), whose sum is σ = 12533920. Its totient is φ = 7773480.

The previous prime is 9976801. The next prime is 9976819. The reversal of 9976813 is 3186799.

It is not a de Polignac number, because 9976813 - 2¹⁷ = 9845741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9976813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9976819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5043 + ... + 6736.

Almost surely, 2^9976813 is an apocalyptic number.

It is an amenable number.

9976813 is a deficient number, since it is larger than the sum of its proper divisors (2557107).

9976813 is a wasteful number, since it uses less digits than its factorization.

9976813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11808 (or 11797 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 9976813 is about 3158.6093458989. The cubic root of 9976813 is about 215.2768238795.

The spelling of 9976813 in words is "nine million, nine hundred seventy-six thousand, eight hundred thirteen".