9974813 has 4 divisors (see below), whose sum is σ = 9981468. Its totient is φ = 9968160.

The previous prime is 9974807. The next prime is 9974821. The reversal of 9974813 is 3184799.

It is a happy number.

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: 3184799 = 19 ⋅167621.

It can be written as a sum of positive squares in 2 ways, for example, as 5866084 + 4108729 = 2422^2 + 2027^2 .

It is a cyclic number.

It is not a de Polignac number, because 9974813 - 2⁸ = 9974557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9974803) 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, 95 + ... + 4467.

It is an arithmetic number, because the mean of its divisors is an integer number (2495367).

Almost surely, 2^9974813 is an apocalyptic number.

It is an amenable number.

9974813 is a deficient number, since it is larger than the sum of its proper divisors (6655).

9974813 is a wasteful number, since it uses less digits than its factorization.

9974813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6654.

The product of its digits is 54432, while the sum is 41.

The square root of 9974813 is about 3158.2927350073. The cubic root of 9974813 is about 215.2624377751.

The spelling of 9974813 in words is "nine million, nine hundred seventy-four thousand, eight hundred thirteen".