389771929873 has 2 divisors, whose sum is σ = 389771929874. Its totient is φ = 389771929872.

The previous prime is 389771929867. The next prime is 389771929879. The reversal of 389771929873 is 378929177983.

It is a balanced prime because it is at equal distance from previous prime (389771929867) and next prime (389771929879).

It can be written as a sum of positive squares in only one way, i.e., 214598709504 + 175173220369 = 463248^2 + 418537^2 .

It is a cyclic number.

It is not a de Polignac number, because 389771929873 - 2¹³ = 389771921681 is a prime.

It is a super-2 number, since 2×389771929873² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 389771929796 and 389771929805.

It is not a weakly prime, because it can be changed into another prime (389771929879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194885964936 + 194885964937.

It is an arithmetic number, because the mean of its divisors is an integer number (194885964937).

Almost surely, 2^389771929873 is an apocalyptic number.

It is an amenable number.

389771929873 is a deficient number, since it is larger than the sum of its proper divisors (1).

389771929873 is an equidigital number, since it uses as much as digits as its factorization.

389771929873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288054144, while the sum is 73.

The spelling of 389771929873 in words is "three hundred eighty-nine billion, seven hundred seventy-one million, nine hundred twenty-nine thousand, eight hundred seventy-three".