1347321889 has 4 divisors (see below), whose sum is σ = 1347412500. Its totient is φ = 1347231280.

The previous prime is 1347321887. The next prime is 1347321923. The reversal of 1347321889 is 9881237431.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 298080225 + 1049241664 = 17265^2 + 32392^2 .

It is a cyclic number.

It is not a de Polignac number, because 1347321889 - 2¹ = 1347321887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1347321883) 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, 17182 + ... + 54679.

It is an arithmetic number, because the mean of its divisors is an integer number (336853125).

Almost surely, 2^1347321889 is an apocalyptic number.

It is an amenable number.

1347321889 is a deficient number, since it is larger than the sum of its proper divisors (90611).

1347321889 is an equidigital number, since it uses as much as digits as its factorization.

1347321889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90610.

The product of its digits is 290304, while the sum is 46.

The square root of 1347321889 is about 36705.8835747077. The cubic root of 1347321889 is about 1104.4781328030.

The spelling of 1347321889 in words is "one billion, three hundred forty-seven million, three hundred twenty-one thousand, eight hundred eighty-nine".