19994317 has 8 divisors (see below), whose sum is σ = 23337216. Its totient is φ = 16773072.

The previous prime is 19994309. The next prime is 19994321. The reversal of 19994317 is 71349991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19994317 - 2³ = 19994309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19994917) 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, 30058 + ... + 30715.

It is an arithmetic number, because the mean of its divisors is an integer number (2917152).

Almost surely, 2^19994317 is an apocalyptic number.

It is an amenable number.

19994317 is a deficient number, since it is larger than the sum of its proper divisors (3342899).

19994317 is an equidigital number, since it uses as much as digits as its factorization.

19994317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60827.

The product of its digits is 61236, while the sum is 43.

The square root of 19994317 is about 4471.5005311416. The cubic root of 19994317 is about 271.4160491651.

The spelling of 19994317 in words is "nineteen million, nine hundred ninety-four thousand, three hundred seventeen".