2389247789 has 2 divisors, whose sum is σ = 2389247790. Its totient is φ = 2389247788.

The previous prime is 2389247771. The next prime is 2389247807. The reversal of 2389247789 is 9877429832.

It is a balanced prime because it is at equal distance from previous prime (2389247771) and next prime (2389247807).

It can be written as a sum of positive squares in only one way, i.e., 1580698564 + 808549225 = 39758^2 + 28435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2389247789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2389247719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1194623894 + 1194623895.

It is an arithmetic number, because the mean of its divisors is an integer number (1194623895).

Almost surely, 2^2389247789 is an apocalyptic number.

It is an amenable number.

2389247789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2389247789 is an equidigital number, since it uses as much as digits as its factorization.

2389247789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12192768, while the sum is 59.

The square root of 2389247789 is about 48879.9323751578. The cubic root of 2389247789 is about 1336.8634945490.

The spelling of 2389247789 in words is "two billion, three hundred eighty-nine million, two hundred forty-seven thousand, seven hundred eighty-nine".