20093389 has 2 divisors, whose sum is σ = 20093390. Its totient is φ = 20093388.

The previous prime is 20093369. The next prime is 20093401. The reversal of 20093389 is 98339002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16670889 + 3422500 = 4083^2 + 1850^2 .

It is a cyclic number.

It is not a de Polignac number, because 20093389 - 2⁵ = 20093357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20093309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10046694 + 10046695.

It is an arithmetic number, because the mean of its divisors is an integer number (10046695).

Almost surely, 2^20093389 is an apocalyptic number.

It is an amenable number.

20093389 is a deficient number, since it is larger than the sum of its proper divisors (1).

20093389 is an equidigital number, since it uses as much as digits as its factorization.

20093389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 20093389 is about 4482.5650023173. The cubic root of 20093389 is about 271.8636003323.

The spelling of 20093389 in words is "twenty million, ninety-three thousand, three hundred eighty-nine".