86946169 has 2 divisors, whose sum is σ = 86946170. Its totient is φ = 86946168.

The previous prime is 86946157. The next prime is 86946173. The reversal of 86946169 is 96164968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84732025 + 2214144 = 9205^2 + 1488^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86946169 is a prime.

It is a super-2 number, since 2×86946169² = 15119272607553122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86946179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43473084 + 43473085.

It is an arithmetic number, because the mean of its divisors is an integer number (43473085).

Almost surely, 2^86946169 is an apocalyptic number.

It is an amenable number.

86946169 is a deficient number, since it is larger than the sum of its proper divisors (1).

86946169 is an equidigital number, since it uses as much as digits as its factorization.

86946169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 86946169 is about 9324.4929620865. The cubic root of 86946169 is about 443.0133533810.

The spelling of 86946169 in words is "eighty-six million, nine hundred forty-six thousand, one hundred sixty-nine".