286966121 has 4 divisors (see below), whose sum is σ = 309040452. Its totient is φ = 264891792.

The previous prime is 286966079. The next prime is 286966123. The reversal of 286966121 is 121669682.

It is a happy number.

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 116402521 + 170563600 = 10789^2 + 13060^2 .

It is a cyclic number.

It is not a de Polignac number, because 286966121 - 2²⁶ = 219857257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (286966123) 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, 11037146 + ... + 11037171.

It is an arithmetic number, because the mean of its divisors is an integer number (77260113).

Almost surely, 2^286966121 is an apocalyptic number.

It is an amenable number.

286966121 is a deficient number, since it is larger than the sum of its proper divisors (22074331).

286966121 is a wasteful number, since it uses less digits than its factorization.

286966121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22074330.

The product of its digits is 62208, while the sum is 41.

The square root of 286966121 is about 16940.0744095178. The cubic root of 286966121 is about 659.5942723671.

It can be divided in two parts, 2869661 and 21, that added together give a palindrome (2869682).

The spelling of 286966121 in words is "two hundred eighty-six million, nine hundred sixty-six thousand, one hundred twenty-one".