123989365039 has 2 divisors, whose sum is σ = 123989365040. Its totient is φ = 123989365038.

The previous prime is 123989364977. The next prime is 123989365061. The reversal of 123989365039 is 930563989321.

It is a strong prime.

It is an emirp because it is prime and its reverse (930563989321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123989365039 - 2¹³ = 123989356847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123989365739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61994682519 + 61994682520.

It is an arithmetic number, because the mean of its divisors is an integer number (61994682520).

Almost surely, 2^123989365039 is an apocalyptic number.

123989365039 is a deficient number, since it is larger than the sum of its proper divisors (1).

123989365039 is an equidigital number, since it uses as much as digits as its factorization.

123989365039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9447840, while the sum is 58.

The spelling of 123989365039 in words is "one hundred twenty-three billion, nine hundred eighty-nine million, three hundred sixty-five thousand, thirty-nine".