20200434389 has 2 divisors, whose sum is σ = 20200434390. Its totient is φ = 20200434388.

The previous prime is 20200434311. The next prime is 20200434391. The reversal of 20200434389 is 98343400202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19752053764 + 448380625 = 140542^2 + 21175^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200434389 - 2²⁰ = 20199385813 is a prime.

Together with 20200434391, 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 (20200434589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100217194 + 10100217195.

It is an arithmetic number, because the mean of its divisors is an integer number (10100217195).

Almost surely, 2^20200434389 is an apocalyptic number.

It is an amenable number.

20200434389 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200434389 is an equidigital number, since it uses as much as digits as its factorization.

20200434389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 20200434389 in words is "twenty billion, two hundred million, four hundred thirty-four thousand, three hundred eighty-nine".