1347709879 has 4 divisors (see below), whose sum is σ = 1348805920. Its totient is φ = 1346613840.

The previous prime is 1347709877. The next prime is 1347709921. The reversal of 1347709879 is 9789077431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1347709879 - 2¹ = 1347709877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1347709871) 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, 546174 + ... + 548635.

It is an arithmetic number, because the mean of its divisors is an integer number (337201480).

Almost surely, 2^1347709879 is an apocalyptic number.

1347709879 is a deficient number, since it is larger than the sum of its proper divisors (1096041).

1347709879 is a wasteful number, since it uses less digits than its factorization.

1347709879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096040.

The product of its (nonzero) digits is 2667168, while the sum is 55.

The square root of 1347709879 is about 36711.1683142882. The cubic root of 1347709879 is about 1104.5841419525.

The spelling of 1347709879 in words is "one billion, three hundred forty-seven million, seven hundred nine thousand, eight hundred seventy-nine".