3842856289 has 2 divisors, whose sum is σ = 3842856290. Its totient is φ = 3842856288.

The previous prime is 3842856287. The next prime is 3842856299. The reversal of 3842856289 is 9826582483.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3823319889 + 19536400 = 61833^2 + 4420^2 .

It is an emirp because it is prime and its reverse (9826582483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3842856289 - 2¹ = 3842856287 is a prime.

Together with 3842856287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3842856287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1921428144 + 1921428145.

It is an arithmetic number, because the mean of its divisors is an integer number (1921428145).

Almost surely, 2^3842856289 is an apocalyptic number.

It is an amenable number.

3842856289 is a deficient number, since it is larger than the sum of its proper divisors (1).

3842856289 is an equidigital number, since it uses as much as digits as its factorization.

3842856289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6635520, while the sum is 55.

The square root of 3842856289 is about 61990.7758380229. The cubic root of 3842856289 is about 1566.3352238996.

The spelling of 3842856289 in words is "three billion, eight hundred forty-two million, eight hundred fifty-six thousand, two hundred eighty-nine".