9143994 has 32 divisors (see below), whose sum is σ = 19521216. Its totient is φ = 2845440.

The previous prime is 9143987. The next prime is 9143999. The reversal of 9143994 is 4993419.

9143994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9143994² = 167225252544072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9143999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15729 + ... + 16299.

It is an arithmetic number, because the mean of its divisors is an integer number (610038).

Almost surely, 2^9143994 is an apocalyptic number.

9143994 is an abundant number, since it is smaller than the sum of its proper divisors (10377222).

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

9143994 is a wasteful number, since it uses less digits than its factorization.

9143994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750.

The product of its digits is 34992, while the sum is 39.

The square root of 9143994 is about 3023.9037683101. The cubic root of 9143994 is about 209.1118499620. Note that the first 3 decimals are identical.

The spelling of 9143994 in words is "nine million, one hundred forty-three thousand, nine hundred ninety-four".