1349478847 has 4 divisors (see below), whose sum is σ = 1380862120. Its totient is φ = 1318095576.

The previous prime is 1349478829. The next prime is 1349478937. The reversal of 1349478847 is 7488749431.

It is a happy number.

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 1349478847 - 2⁷ = 1349478719 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 (1349478047) 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, 15691572 + ... + 15691657.

It is an arithmetic number, because the mean of its divisors is an integer number (345215530).

Almost surely, 2^1349478847 is an apocalyptic number.

1349478847 is a deficient number, since it is larger than the sum of its proper divisors (31383273).

1349478847 is an equidigital number, since it uses as much as digits as its factorization.

1349478847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31383272.

The product of its digits is 5419008, while the sum is 55.

The square root of 1349478847 is about 36735.2534631245. The cubic root of 1349478847 is about 1105.0672132085.

The spelling of 1349478847 in words is "one billion, three hundred forty-nine million, four hundred seventy-eight thousand, eight hundred forty-seven".