14143994 has 4 divisors (see below), whose sum is σ = 21215994. Its totient is φ = 7071996.

The previous prime is 14143993. The next prime is 14144003. The reversal of 14143994 is 49934141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49934141 = 1787 ⋅27943.

It can be written as a sum of positive squares in only one way, i.e., 10857025 + 3286969 = 3295^2 + 1813^2 .

It is not an unprimeable number, because it can be changed into a prime (14143991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3535997 + ... + 3536000.

Almost surely, 2^14143994 is an apocalyptic number.

14143994 is a deficient number, since it is larger than the sum of its proper divisors (7072000).

14143994 is an equidigital number, since it uses as much as digits as its factorization.

14143994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7071999.

The product of its digits is 15552, while the sum is 35.

The square root of 14143994 is about 3760.8501698419. The cubic root of 14143994 is about 241.8377096440.

The spelling of 14143994 in words is "fourteen million, one hundred forty-three thousand, nine hundred ninety-four".