1347889 has 4 divisors (see below), whose sum is σ = 1350756. Its totient is φ = 1345024.

The previous prime is 1347881. The next prime is 1347893. The reversal of 1347889 is 9887431.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1034289 + 313600 = 1017^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 1347889 - 2³ = 1347881 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1347881) 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, 544 + ... + 1729.

It is an arithmetic number, because the mean of its divisors is an integer number (337689).

2^1347889 is an apocalyptic number.

It is an amenable number.

1347889 is a deficient number, since it is larger than the sum of its proper divisors (2867).

1347889 is an equidigital number, since it uses as much as digits as its factorization.

1347889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866.

The product of its digits is 48384, while the sum is 40.

The square root of 1347889 is about 1160.9862186951. The cubic root of 1347889 is about 110.4633075692.

The spelling of 1347889 in words is "one million, three hundred forty-seven thousand, eight hundred eighty-nine".