434491189 has 4 divisors (see below), whose sum is σ = 473990400. Its totient is φ = 394991980.

The previous prime is 434491159. The next prime is 434491199. The reversal of 434491189 is 981194434.

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 434491189 - 2⁵ = 434491157 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 (434491159) 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, 19749589 + ... + 19749610.

It is an arithmetic number, because the mean of its divisors is an integer number (118497600).

Almost surely, 2^434491189 is an apocalyptic number.

It is an amenable number.

434491189 is a deficient number, since it is larger than the sum of its proper divisors (39499211).

434491189 is a wasteful number, since it uses less digits than its factorization.

434491189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39499210.

The product of its digits is 124416, while the sum is 43.

The square root of 434491189 is about 20844.4522355470. The cubic root of 434491189 is about 757.4029482054.

The spelling of 434491189 in words is "four hundred thirty-four million, four hundred ninety-one thousand, one hundred eighty-nine".