389060909 has 2 divisors, whose sum is σ = 389060910. Its totient is φ = 389060908.

The previous prime is 389060851. The next prime is 389061037. The reversal of 389060909 is 909060983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373339684 + 15721225 = 19322^2 + 3965^2 .

It is an emirp because it is prime and its reverse (909060983) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389060909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 389060909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389062909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194530454 + 194530455.

It is an arithmetic number, because the mean of its divisors is an integer number (194530455).

Almost surely, 2^389060909 is an apocalyptic number.

It is an amenable number.

389060909 is a deficient number, since it is larger than the sum of its proper divisors (1).

389060909 is an equidigital number, since it uses as much as digits as its factorization.

389060909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 389060909 is about 19724.6269673218. The cubic root of 389060909 is about 730.0274644074.

The spelling of 389060909 in words is "three hundred eighty-nine million, sixty thousand, nine hundred nine".