86242237 has 4 divisors (see below), whose sum is σ = 86295580. Its totient is φ = 86188896.

The previous prime is 86242231. The next prime is 86242267. The reversal of 86242237 is 73224268.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71334916 + 14907321 = 8446^2 + 3861^2 .

It is a cyclic number.

It is not a de Polignac number, because 86242237 - 2⁷ = 86242109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86242231) 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 in 3 ways as a sum of consecutive naturals, for example, 24168 + ... + 27505.

It is an arithmetic number, because the mean of its divisors is an integer number (21573895).

Almost surely, 2^86242237 is an apocalyptic number.

It is an amenable number.

86242237 is a deficient number, since it is larger than the sum of its proper divisors (53343).

86242237 is a wasteful number, since it uses less digits than its factorization.

86242237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53342.

The product of its digits is 32256, while the sum is 34.

The square root of 86242237 is about 9286.6698552280. The cubic root of 86242237 is about 441.8145400348.

The spelling of 86242237 in words is "eighty-six million, two hundred forty-two thousand, two hundred thirty-seven".