434565389 has 2 divisors, whose sum is σ = 434565390. Its totient is φ = 434565388.

The previous prime is 434565349. The next prime is 434565419. The reversal of 434565389 is 983565434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289170025 + 145395364 = 17005^2 + 12058^2 .

It is a cyclic number.

It is not a de Polignac number, because 434565389 - 2¹⁶ = 434499853 is a prime.

It is a super-4 number, since 4×434565389⁴ (a number of 36 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434565349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217282694 + 217282695.

It is an arithmetic number, because the mean of its divisors is an integer number (217282695).

Almost surely, 2^434565389 is an apocalyptic number.

It is an amenable number.

434565389 is a deficient number, since it is larger than the sum of its proper divisors (1).

434565389 is an equidigital number, since it uses as much as digits as its factorization.

434565389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 47.

The square root of 434565389 is about 20846.2320096463. The cubic root of 434565389 is about 757.4460607789.

The spelling of 434565389 in words is "four hundred thirty-four million, five hundred sixty-five thousand, three hundred eighty-nine".