1347391139 has 4 divisors (see below), whose sum is σ = 1347473856. Its totient is φ = 1347308424.

The previous prime is 1347391103. The next prime is 1347391163. The reversal of 1347391139 is 9311937431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9311937431 = 311 ⋅29941921.

It is a cyclic number.

It is not a de Polignac number, because 1347391139 - 2⁸ = 1347390883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1347391096 and 1347391105.

It is not an unprimeable number, because it can be changed into a prime (1347391039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7904 + ... + 52509.

It is an arithmetic number, because the mean of its divisors is an integer number (336868464).

Almost surely, 2^1347391139 is an apocalyptic number.

1347391139 is a deficient number, since it is larger than the sum of its proper divisors (82717).

1347391139 is an equidigital number, since it uses as much as digits as its factorization.

1347391139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82716.

The product of its digits is 61236, while the sum is 41.

The square root of 1347391139 is about 36706.8268718504. The cubic root of 1347391139 is about 1104.4970552300.

The spelling of 1347391139 in words is "one billion, three hundred forty-seven million, three hundred ninety-one thousand, one hundred thirty-nine".