86358991 has 2 divisors, whose sum is σ = 86358992. Its totient is φ = 86358990.

The previous prime is 86358977. The next prime is 86359001. The reversal of 86358991 is 19985368.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86358991 - 2⁹ = 86358479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86353991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43179495 + 43179496.

It is an arithmetic number, because the mean of its divisors is an integer number (43179496).

Almost surely, 2^86358991 is an apocalyptic number.

86358991 is a deficient number, since it is larger than the sum of its proper divisors (1).

86358991 is an equidigital number, since it uses as much as digits as its factorization.

86358991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 49.

The square root of 86358991 is about 9292.9538361061. The cubic root of 86358991 is about 442.0138250421.

The spelling of 86358991 in words is "eighty-six million, three hundred fifty-eight thousand, nine hundred ninety-one".