19434271 has 4 divisors (see below), whose sum is σ = 19474344. Its totient is φ = 19394200.

The previous prime is 19434269. The next prime is 19434277. The reversal of 19434271 is 17243491.

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 19434271 - 2¹ = 19434269 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 (19434277) 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, 19300 + ... + 20281.

It is an arithmetic number, because the mean of its divisors is an integer number (4868586).

Almost surely, 2^19434271 is an apocalyptic number.

19434271 is a deficient number, since it is larger than the sum of its proper divisors (40073).

19434271 is an equidigital number, since it uses as much as digits as its factorization.

19434271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40072.

The product of its digits is 6048, while the sum is 31.

The square root of 19434271 is about 4408.4318073437. The cubic root of 19434271 is about 268.8578686512.

The spelling of 19434271 in words is "nineteen million, four hundred thirty-four thousand, two hundred seventy-one".