86284237 has 4 divisors (see below), whose sum is σ = 92921500. Its totient is φ = 79646976.

The previous prime is 86284183. The next prime is 86284243. The reversal of 86284237 is 73248268.

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 23097636 + 63186601 = 4806^2 + 7949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86284237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86284237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86284837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3318612 + ... + 3318637.

It is an arithmetic number, because the mean of its divisors is an integer number (23230375).

Almost surely, 2^86284237 is an apocalyptic number.

It is an amenable number.

86284237 is a deficient number, since it is larger than the sum of its proper divisors (6637263).

86284237 is a wasteful number, since it uses less digits than its factorization.

86284237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6637262.

The product of its digits is 129024, while the sum is 40.

The square root of 86284237 is about 9288.9308857371. The cubic root of 86284237 is about 441.8862496744.

The spelling of 86284237 in words is "eighty-six million, two hundred eighty-four thousand, two hundred thirty-seven".