9789994 has 16 divisors (see below), whose sum is σ = 16086600. Its totient is φ = 4447744.

The previous prime is 9789991. The next prime is 9790003. The reversal of 9789994 is 4999879.

It can be written as a sum of positive squares in 4 ways, for example, as 8381025 + 1408969 = 2895^2 + 1187^2 .

It is not an unprimeable number, because it can be changed into a prime (9789991) 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, 3979 + ... + 5950.

Almost surely, 2^9789994 is an apocalyptic number.

9789994 is a deficient number, since it is larger than the sum of its proper divisors (6296606).

9789994 is a wasteful number, since it uses less digits than its factorization.

9789994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9977.

The product of its digits is 1469664, while the sum is 55.

The square root of 9789994 is about 3128.8966106281. The cubic root of 9789994 is about 213.9246393744.

The spelling of 9789994 in words is "nine million, seven hundred eighty-nine thousand, nine hundred ninety-four".