1339271909 has 4 divisors (see below), whose sum is σ = 1367767104. Its totient is φ = 1310776716.

The previous prime is 1339271887. The next prime is 1339271933. The reversal of 1339271909 is 9091729331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1339271909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1339271909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339271959) 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 3 ways as a sum of consecutive naturals, for example, 14247527 + ... + 14247620.

It is an arithmetic number, because the mean of its divisors is an integer number (341941776).

Almost surely, 2^1339271909 is an apocalyptic number.

It is an amenable number.

1339271909 is a deficient number, since it is larger than the sum of its proper divisors (28495195).

1339271909 is an equidigital number, since it uses as much as digits as its factorization.

1339271909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28495194.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 1339271909 is about 36596.0641189732. The cubic root of 1339271909 is about 1102.2740583508.

The spelling of 1339271909 in words is "one billion, three hundred thirty-nine million, two hundred seventy-one thousand, nine hundred nine".