8361139 has 2 divisors, whose sum is σ = 8361140. Its totient is φ = 8361138.

The previous prime is 8361137. The next prime is 8361151. The reversal of 8361139 is 9311638.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8361139 - 2¹ = 8361137 is a prime.

Together with 8361137, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8361139.

It is not a weakly prime, because it can be changed into another prime (8361137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4180569 + 4180570.

It is an arithmetic number, because the mean of its divisors is an integer number (4180570).

Almost surely, 2^8361139 is an apocalyptic number.

8361139 is a deficient number, since it is larger than the sum of its proper divisors (1).

8361139 is an equidigital number, since it uses as much as digits as its factorization.

8361139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 8361139 is about 2891.5634179454. The cubic root of 8361139 is about 202.9653090921.

The spelling of 8361139 in words is "eight million, three hundred sixty-one thousand, one hundred thirty-nine".