286389947 has 2 divisors, whose sum is σ = 286389948. Its totient is φ = 286389946.

The previous prime is 286389893. The next prime is 286390003. The reversal of 286389947 is 749983682.

It is a happy number.

It is an a-pointer prime, because the next prime (286390003) can be obtained adding 286389947 to its sum of digits (56).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 286389947 - 2¹⁰ = 286388923 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 286389892 and 286389901.

It is not a weakly prime, because it can be changed into another prime (286380947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143194973 + 143194974.

It is an arithmetic number, because the mean of its divisors is an integer number (143194974).

Almost surely, 2^286389947 is an apocalyptic number.

286389947 is a deficient number, since it is larger than the sum of its proper divisors (1).

286389947 is an equidigital number, since it uses as much as digits as its factorization.

286389947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 56.

The square root of 286389947 is about 16923.0596228933. The cubic root of 286389947 is about 659.1525295074.

The spelling of 286389947 in words is "two hundred eighty-six million, three hundred eighty-nine thousand, nine hundred forty-seven".