434523389 has 2 divisors, whose sum is σ = 434523390. Its totient is φ = 434523388.

The previous prime is 434523361. The next prime is 434523391. The reversal of 434523389 is 983325434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 352312900 + 82210489 = 18770^2 + 9067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434523389 is a prime.

Together with 434523391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434523329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217261694 + 217261695.

It is an arithmetic number, because the mean of its divisors is an integer number (217261695).

Almost surely, 2^434523389 is an apocalyptic number.

It is an amenable number.

434523389 is a deficient number, since it is larger than the sum of its proper divisors (1).

434523389 is an equidigital number, since it uses as much as digits as its factorization.

434523389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 41.

The square root of 434523389 is about 20845.2246090082. The cubic root of 434523389 is about 757.4216580382.

The spelling of 434523389 in words is "four hundred thirty-four million, five hundred twenty-three thousand, three hundred eighty-nine".