9993000778 has 4 divisors (see below), whose sum is σ = 14989501170. Its totient is φ = 4996500388.

The previous prime is 9993000761. The next prime is 9993000779. The reversal of 9993000778 is 8770003999.

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

It can be written as a sum of positive squares in only one way, i.e., 7128931489 + 2864069289 = 84433^2 + 53517^2 .

It is not an unprimeable number, because it can be changed into a prime (9993000779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2498250193 + ... + 2498250196.

Almost surely, 2^9993000778 is an apocalyptic number.

9993000778 is a deficient number, since it is larger than the sum of its proper divisors (4996500392).

9993000778 is a wasteful number, since it uses less digits than its factorization.

9993000778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4996500391.

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

The square root of 9993000778 is about 99964.9977642175. The cubic root of 9993000778 is about 2153.9319271593.

The spelling of 9993000778 in words is "nine billion, nine hundred ninety-three million, seven hundred seventy-eight", and thus it is an aban number.