434428189 has 16 divisors (see below), whose sum is σ = 476761600. Its totient is φ = 395776368.

The previous prime is 434428187. The next prime is 434428193. The reversal of 434428189 is 981824434.

It is not a de Polignac number, because 434428189 - 2¹ = 434428187 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 (434428187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172312 + ... + 174814.

It is an arithmetic number, because the mean of its divisors is an integer number (29797600).

Almost surely, 2^434428189 is an apocalyptic number.

It is an amenable number.

434428189 is a deficient number, since it is larger than the sum of its proper divisors (42333411).

434428189 is an equidigital number, since it uses as much as digits as its factorization.

434428189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621 (or 2595 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 434428189 is about 20842.9409872983. The cubic root of 434428189 is about 757.3663393371.

The spelling of 434428189 in words is "four hundred thirty-four million, four hundred twenty-eight thousand, one hundred eighty-nine".