9001994 has 16 divisors (see below), whose sum is σ = 13815360. Its totient is φ = 4398240.

The previous prime is 9001987. The next prime is 9001999. The reversal of 9001994 is 4991009.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9001994.

It is not an unprimeable number, because it can be changed into a prime (9001999) 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, 18089 + ... + 18579.

It is an arithmetic number, because the mean of its divisors is an integer number (863460).

Almost surely, 2^9001994 is an apocalyptic number.

9001994 is a deficient number, since it is larger than the sum of its proper divisors (4813366).

9001994 is a wasteful number, since it uses less digits than its factorization.

9001994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 9001994 is about 3000.3323149278. The cubic root of 9001994 is about 208.0237429751.

The spelling of 9001994 in words is "nine million, one thousand, nine hundred ninety-four".