86959121 has 2 divisors, whose sum is σ = 86959122. Its totient is φ = 86959120.

The previous prime is 86959111. The next prime is 86959157. The reversal of 86959121 is 12195968.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86862400 + 96721 = 9320^2 + 311^2 .

It is a cyclic number.

It is not a de Polignac number, because 86959121 - 2⁶ = 86959057 is a prime.

It is not a weakly prime, because it can be changed into another prime (86959111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43479560 + 43479561.

It is an arithmetic number, because the mean of its divisors is an integer number (43479561).

Almost surely, 2^86959121 is an apocalyptic number.

It is an amenable number.

86959121 is a deficient number, since it is larger than the sum of its proper divisors (1).

86959121 is an equidigital number, since it uses as much as digits as its factorization.

86959121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 41.

The square root of 86959121 is about 9325.1874511990. The cubic root of 86959121 is about 443.0353502255.

The spelling of 86959121 in words is "eighty-six million, nine hundred fifty-nine thousand, one hundred twenty-one".