19434401 has 4 divisors (see below), whose sum is σ = 22210752. Its totient is φ = 16658052.

The previous prime is 19434391. The next prime is 19434403. The reversal of 19434401 is 10443491.

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 19434401 - 2¹⁴ = 19418017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19434403) 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, 1388165 + ... + 1388178.

It is an arithmetic number, because the mean of its divisors is an integer number (5552688).

Almost surely, 2^19434401 is an apocalyptic number.

It is an amenable number.

19434401 is a deficient number, since it is larger than the sum of its proper divisors (2776351).

19434401 is an equidigital number, since it uses as much as digits as its factorization.

19434401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776350.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 19434401 is about 4408.4465517912. The cubic root of 19434401 is about 268.8584681325.

Adding to 19434401 its reverse (10443491), we get a palindrome (29877892).

The spelling of 19434401 in words is "nineteen million, four hundred thirty-four thousand, four hundred one".