19896443 has 8 divisors (see below), whose sum is σ = 24076512. Its totient is φ = 16050816.

The previous prime is 19896433. The next prime is 19896479. The reversal of 19896443 is 34469891.

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 19896443 - 2⁴ = 19896427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19896394 and 19896403.

It is not an unprimeable number, because it can be changed into a prime (19896413) 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, 83480 + ... + 83717.

It is an arithmetic number, because the mean of its divisors is an integer number (3009564).

Almost surely, 2^19896443 is an apocalyptic number.

19896443 is a deficient number, since it is larger than the sum of its proper divisors (4180069).

19896443 is a wasteful number, since it uses less digits than its factorization.

19896443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167221.

The product of its digits is 186624, while the sum is 44.

The square root of 19896443 is about 4460.5429041766. The cubic root of 19896443 is about 270.9724558181.

The spelling of 19896443 in words is "nineteen million, eight hundred ninety-six thousand, four hundred forty-three".