286440263 has 2 divisors, whose sum is σ = 286440264. Its totient is φ = 286440262.

The previous prime is 286440239. The next prime is 286440289. The reversal of 286440263 is 362044682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 286440263 - 2¹⁶ = 286374727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (286443263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143220131 + 143220132.

It is an arithmetic number, because the mean of its divisors is an integer number (143220132).

Almost surely, 2^286440263 is an apocalyptic number.

286440263 is a deficient number, since it is larger than the sum of its proper divisors (1).

286440263 is an equidigital number, since it uses as much as digits as its factorization.

286440263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 286440263 is about 16924.5461682138. The cubic root of 286440263 is about 659.1911295315.

The spelling of 286440263 in words is "two hundred eighty-six million, four hundred forty thousand, two hundred sixty-three".