9978793 has 4 divisors (see below), whose sum is σ = 10885968. Its totient is φ = 9071620.

The previous prime is 9978791. The next prime is 9978799. The reversal of 9978793 is 3978799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9978793 - 2¹ = 9978791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9978793.

It is not an unprimeable number, because it can be changed into a prime (9978791) 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, 453571 + ... + 453592.

It is an arithmetic number, because the mean of its divisors is an integer number (2721492).

Almost surely, 2^9978793 is an apocalyptic number.

It is an amenable number.

9978793 is a deficient number, since it is larger than the sum of its proper divisors (907175).

9978793 is a wasteful number, since it uses less digits than its factorization.

9978793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907174.

The product of its digits is 857304, while the sum is 52.

The square root of 9978793 is about 3158.9227594229. The cubic root of 9978793 is about 215.2910642292.

The spelling of 9978793 in words is "nine million, nine hundred seventy-eight thousand, seven hundred ninety-three".