19941271 has 4 divisors (see below), whose sum is σ = 22790032. Its totient is φ = 17092512.

The previous prime is 19941247. The next prime is 19941281. The reversal of 19941271 is 17214991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19941271 - 2¹³ = 19933079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19941281) 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, 1424370 + ... + 1424383.

It is an arithmetic number, because the mean of its divisors is an integer number (5697508).

Almost surely, 2^19941271 is an apocalyptic number.

19941271 is a deficient number, since it is larger than the sum of its proper divisors (2848761).

19941271 is an equidigital number, since it uses as much as digits as its factorization.

19941271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2848760.

The product of its digits is 4536, while the sum is 34.

The square root of 19941271 is about 4465.5650258394. The cubic root of 19941271 is about 271.1758094506.

The spelling of 19941271 in words is "nineteen million, nine hundred forty-one thousand, two hundred seventy-one".