434144431421 has 4 divisors (see below), whose sum is σ = 434428002144. Its totient is φ = 433860860700.

The previous prime is 434144431379. The next prime is 434144431433. The reversal of 434144431421 is 124134441434.

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 434144431421 - 2²⁶ = 434077322557 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 (434144431321) 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, 141783065 + ... + 141786126.

It is an arithmetic number, because the mean of its divisors is an integer number (108607000536).

Almost surely, 2^434144431421 is an apocalyptic number.

It is an amenable number.

434144431421 is a deficient number, since it is larger than the sum of its proper divisors (283570723).

434144431421 is a wasteful number, since it uses less digits than its factorization.

434144431421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283570722.

The product of its digits is 73728, while the sum is 35.

Adding to 434144431421 its reverse (124134441434), we get a palindrome (558278872855).

The spelling of 434144431421 in words is "four hundred thirty-four billion, one hundred forty-four million, four hundred thirty-one thousand, four hundred twenty-one".