1386841139 has 2 divisors, whose sum is σ = 1386841140. Its totient is φ = 1386841138.

The previous prime is 1386841123. The next prime is 1386841151. The reversal of 1386841139 is 9311486831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1386841139 - 2⁴ = 1386841123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1386841139.

It is not a weakly prime, because it can be changed into another prime (1386841109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693420569 + 693420570.

It is an arithmetic number, because the mean of its divisors is an integer number (693420570).

Almost surely, 2^1386841139 is an apocalyptic number.

1386841139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386841139 is an equidigital number, since it uses as much as digits as its factorization.

1386841139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 1386841139 is about 37240.3160432346. The cubic root of 1386841139 is about 1115.1729812662.

The spelling of 1386841139 in words is "one billion, three hundred eighty-six million, eight hundred forty-one thousand, one hundred thirty-nine".