1994171 has 4 divisors (see below), whose sum is σ = 2005872. Its totient is φ = 1982472.

The previous prime is 1994143. The next prime is 1994191. The reversal of 1994171 is 1714991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1714991 = 367 ⋅4673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1994171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1994101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5591 + ... + 5936.

It is an arithmetic number, because the mean of its divisors is an integer number (501468).

2^1994171 is an apocalyptic number.

1994171 is a deficient number, since it is larger than the sum of its proper divisors (11701).

1994171 is a wasteful number, since it uses less digits than its factorization.

1994171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11700.

The product of its digits is 2268, while the sum is 32.

The square root of 1994171 is about 1412.1511958710. The cubic root of 1994171 is about 125.8695845537.

The spelling of 1994171 in words is "one million, nine hundred ninety-four thousand, one hundred seventy-one".