389924064709 has 2 divisors, whose sum is σ = 389924064710. Its totient is φ = 389924064708.

The previous prime is 389924064703. The next prime is 389924064749. The reversal of 389924064709 is 907460429983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244923040609 + 145001024100 = 494897^2 + 380790^2 .

It is a cyclic number.

It is not a de Polignac number, because 389924064709 - 2³ = 389924064701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389924064701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194962032354 + 194962032355.

It is an arithmetic number, because the mean of its divisors is an integer number (194962032355).

Almost surely, 2^389924064709 is an apocalyptic number.

It is an amenable number.

389924064709 is a deficient number, since it is larger than the sum of its proper divisors (1).

389924064709 is an equidigital number, since it uses as much as digits as its factorization.

389924064709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23514624, while the sum is 61.

The spelling of 389924064709 in words is "three hundred eighty-nine billion, nine hundred twenty-four million, sixty-four thousand, seven hundred nine".