86915963 has 2 divisors, whose sum is σ = 86915964. Its totient is φ = 86915962.

The previous prime is 86915953. The next prime is 86915989. The reversal of 86915963 is 36951968.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86915963 - 2⁴ = 86915947 is a prime.

It is not a weakly prime, because it can be changed into another prime (86915953) 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, 43457981 + 43457982.

It is an arithmetic number, because the mean of its divisors is an integer number (43457982).

Almost surely, 2^86915963 is an apocalyptic number.

86915963 is a deficient number, since it is larger than the sum of its proper divisors (1).

86915963 is an equidigital number, since it uses as much as digits as its factorization.

86915963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 47.

The square root of 86915963 is about 9322.8731086506. The cubic root of 86915963 is about 442.9620449625.

It can be divided in two parts, 86915 and 963, that added together give a palindrome (87878).

The spelling of 86915963 in words is "eighty-six million, nine hundred fifteen thousand, nine hundred sixty-three".