9389780994 has 16 divisors (see below), whose sum is σ = 20486795040. Its totient is φ = 2845388160.

The previous prime is 9389780993. The next prime is 9389780999. The reversal of 9389780994 is 4990879839.

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 142269409 = 9389780994 / (9 + 3 + 8 + 9 + 7 + 8 + 0 + 9 + 9 + 4).

It is not an unprimeable number, because it can be changed into a prime (9389780993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71134639 + ... + 71134770.

It is an arithmetic number, because the mean of its divisors is an integer number (1280424690).

Almost surely, 2^9389780994 is an apocalyptic number.

9389780994 is an abundant number, since it is smaller than the sum of its proper divisors (11097014046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9389780994 is a wasteful number, since it uses less digits than its factorization.

9389780994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142269425.

The product of its (nonzero) digits is 35271936, while the sum is 66.

The square root of 9389780994 is about 96900.8823179645. The cubic root of 9389780994 is about 2109.6892389903.

The spelling of 9389780994 in words is "nine billion, three hundred eighty-nine million, seven hundred eighty thousand, nine hundred ninety-four".