19894317 has 8 divisors (see below), whose sum is σ = 26546496. Its totient is φ = 13252512.

The previous prime is 19894297. The next prime is 19894321. The reversal of 19894317 is 71349891.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-19894317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19894367) 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, 5448 + ... + 8334.

It is an arithmetic number, because the mean of its divisors is an integer number (3318312).

Almost surely, 2^19894317 is an apocalyptic number.

It is an amenable number.

19894317 is a deficient number, since it is larger than the sum of its proper divisors (6652179).

19894317 is a wasteful number, since it uses less digits than its factorization.

19894317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5187.

The product of its digits is 54432, while the sum is 42.

The square root of 19894317 is about 4460.3045860120. The cubic root of 19894317 is about 270.9628040433.

The spelling of 19894317 in words is "nineteen million, eight hundred ninety-four thousand, three hundred seventeen".