389924064749 has 2 divisors, whose sum is σ = 389924064750. Its totient is φ = 389924064748.

The previous prime is 389924064709. The next prime is 389924064757. The reversal of 389924064749 is 947460429983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211675446724 + 178248618025 = 460082^2 + 422195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389924064749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389924064709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194962032374 + 194962032375.

It is an arithmetic number, because the mean of its divisors is an integer number (194962032375).

Almost surely, 2^389924064749 is an apocalyptic number.

It is an amenable number.

389924064749 is a deficient number, since it is larger than the sum of its proper divisors (1).

389924064749 is an equidigital number, since it uses as much as digits as its factorization.

389924064749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94058496, while the sum is 65.

The spelling of 389924064749 in words is "three hundred eighty-nine billion, nine hundred twenty-four million, sixty-four thousand, seven hundred forty-nine".