86709038789 has 2 divisors, whose sum is σ = 86709038790. Its totient is φ = 86709038788.

The previous prime is 86709038753. The next prime is 86709038791. The reversal of 86709038789 is 98783090768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85629390625 + 1079648164 = 292625^2 + 32858^2 .

It is a cyclic number.

It is not a de Polignac number, because 86709038789 - 2¹² = 86709034693 is a prime.

Together with 86709038791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86709038749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43354519394 + 43354519395.

It is an arithmetic number, because the mean of its divisors is an integer number (43354519395).

Almost surely, 2^86709038789 is an apocalyptic number.

It is an amenable number.

86709038789 is a deficient number, since it is larger than the sum of its proper divisors (1).

86709038789 is an equidigital number, since it uses as much as digits as its factorization.

86709038789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36578304, while the sum is 65.

The spelling of 86709038789 in words is "eighty-six billion, seven hundred nine million, thirty-eight thousand, seven hundred eighty-nine".