286121387 has 2 divisors, whose sum is σ = 286121388. Its totient is φ = 286121386.

The previous prime is 286121377. The next prime is 286121393. The reversal of 286121387 is 783121682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 286121387 - 2⁴ = 286121371 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 286121387.

It is not a weakly prime, because it can be changed into another prime (286121327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143060693 + 143060694.

It is an arithmetic number, because the mean of its divisors is an integer number (143060694).

Almost surely, 2^286121387 is an apocalyptic number.

286121387 is a deficient number, since it is larger than the sum of its proper divisors (1).

286121387 is an equidigital number, since it uses as much as digits as its factorization.

286121387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 38.

The square root of 286121387 is about 16915.1230264518. The cubic root of 286121387 is about 658.9464266423.

The spelling of 286121387 in words is "two hundred eighty-six million, one hundred twenty-one thousand, three hundred eighty-seven".