434389 has 2 divisors, whose sum is σ = 434390. Its totient is φ = 434388.

The previous prime is 434387. The next prime is 434407. The reversal of 434389 is 983434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 293764 + 140625 = 542^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 434389 - 2¹ = 434387 is a prime.

Together with 434387, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 434389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217194 + 217195.

It is an arithmetic number, because the mean of its divisors is an integer number (217195).

2⁴³⁴³⁸⁹ is an apocalyptic number.

It is an amenable number.

434389 is a deficient number, since it is larger than the sum of its proper divisors (1).

434389 is an equidigital number, since it uses as much as digits as its factorization.

434389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 434389 is about 659.0819372430. The cubic root of 434389 is about 75.7343565092.

The spelling of 434389 in words is "four hundred thirty-four thousand, three hundred eighty-nine".