286238489 has 4 divisors (see below), whose sum is σ = 286447140. Its totient is φ = 286029840.

The previous prime is 286238483. The next prime is 286238509. The reversal of 286238489 is 984832682.

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 47844889 + 238393600 = 6917^2 + 15440^2 .

It is a cyclic number.

It is not a de Polignac number, because 286238489 - 2⁸ = 286238233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (286238483) 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, 102254 + ... + 105015.

It is an arithmetic number, because the mean of its divisors is an integer number (71611785).

Almost surely, 2^286238489 is an apocalyptic number.

It is an amenable number.

286238489 is a deficient number, since it is larger than the sum of its proper divisors (208651).

286238489 is a wasteful number, since it uses less digits than its factorization.

286238489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208650.

The product of its digits is 1327104, while the sum is 50.

The square root of 286238489 is about 16918.5841310672. The cubic root of 286238489 is about 659.0363108934.

The spelling of 286238489 in words is "two hundred eighty-six million, two hundred thirty-eight thousand, four hundred eighty-nine".