19894241 has 4 divisors (see below), whose sum is σ = 20759232. Its totient is φ = 19029252.

The previous prime is 19894223. The next prime is 19894279. The reversal of 19894241 is 14249891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19894241 - 2⁶ = 19894177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19894195 and 19894204.

It is not an unprimeable number, because it can be changed into a prime (19894201) 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, 432461 + ... + 432506.

It is an arithmetic number, because the mean of its divisors is an integer number (5189808).

Almost surely, 2^19894241 is an apocalyptic number.

It is an amenable number.

19894241 is a deficient number, since it is larger than the sum of its proper divisors (864991).

19894241 is an equidigital number, since it uses as much as digits as its factorization.

19894241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864990.

The product of its digits is 20736, while the sum is 38.

The square root of 19894241 is about 4460.2960664064. The cubic root of 19894241 is about 270.9624590001.

The spelling of 19894241 in words is "nineteen million, eight hundred ninety-four thousand, two hundred forty-one".