86500789 has 2 divisors, whose sum is σ = 86500790. Its totient is φ = 86500788.

The previous prime is 86500781. The next prime is 86500793. The reversal of 86500789 is 98700568.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43335889 + 43164900 = 6583^2 + 6570^2 .

It is a cyclic number.

It is not a de Polignac number, because 86500789 - 2³ = 86500781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86500781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43250394 + 43250395.

It is an arithmetic number, because the mean of its divisors is an integer number (43250395).

Almost surely, 2^86500789 is an apocalyptic number.

It is an amenable number.

86500789 is a deficient number, since it is larger than the sum of its proper divisors (1).

86500789 is an equidigital number, since it uses as much as digits as its factorization.

86500789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 86500789 is about 9300.5800356752. The cubic root of 86500789 is about 442.2556157450.

The spelling of 86500789 in words is "eighty-six million, five hundred thousand, seven hundred eighty-nine".