86956841 has 2 divisors, whose sum is σ = 86956842. Its totient is φ = 86956840.

The previous prime is 86956817. The next prime is 86956873. The reversal of 86956841 is 14865968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60217600 + 26739241 = 7760^2 + 5171^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86956841 is a prime.

It is a super-2 number, since 2×86956841² = 15122984393398562, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (86950841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43478420 + 43478421.

It is an arithmetic number, because the mean of its divisors is an integer number (43478421).

Almost surely, 2^86956841 is an apocalyptic number.

It is an amenable number.

86956841 is a deficient number, since it is larger than the sum of its proper divisors (1).

86956841 is an equidigital number, since it uses as much as digits as its factorization.

86956841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 47.

The square root of 86956841 is about 9325.0652008444. The cubic root of 86956841 is about 443.0314781784.

The spelling of 86956841 in words is "eighty-six million, nine hundred fifty-six thousand, eight hundred forty-one".