1386961839 has 16 divisors (see below), whose sum is σ = 2058282240. Its totient is φ = 923055480.

The previous prime is 1386961799. The next prime is 1386961853. The reversal of 1386961839 is 9381696831.

1386961839 is a `hidden beast` number, since 13 + 8 + 6 + 9 + 618 + 3 + 9 = 666.

It is not a de Polignac number, because 1386961839 - 2¹² = 1386957743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386961339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27907 + ... + 59604.

It is an arithmetic number, because the mean of its divisors is an integer number (128642640).

Almost surely, 2^1386961839 is an apocalyptic number.

1386961839 is a deficient number, since it is larger than the sum of its proper divisors (671320401).

1386961839 is an equidigital number, since it uses as much as digits as its factorization.

1386961839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88107 (or 88101 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 1386961839 is about 37241.9365635032. The cubic root of 1386961839 is about 1115.2053323578.

The spelling of 1386961839 in words is "one billion, three hundred eighty-six million, nine hundred sixty-one thousand, eight hundred thirty-nine".