19994343 has 8 divisors (see below), whose sum is σ = 26763888. Its totient is φ = 13277184.

The previous prime is 19994323. The next prime is 19994353. The reversal of 19994343 is 34349991.

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

It is not a de Polignac number, because 19994343 - 2⁶ = 19994279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19994295 and 19994304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19994323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12196 + ... + 13737.

It is an arithmetic number, because the mean of its divisors is an integer number (3345486).

Almost surely, 2^19994343 is an apocalyptic number.

19994343 is a deficient number, since it is larger than the sum of its proper divisors (6769545).

19994343 is a wasteful number, since it uses less digits than its factorization.

19994343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26193.

The product of its digits is 104976, while the sum is 42.

The square root of 19994343 is about 4471.5034384422. The cubic root of 19994343 is about 271.4161668121.

The spelling of 19994343 in words is "nineteen million, nine hundred ninety-four thousand, three hundred forty-three".