1381339 has 8 divisors (see below), whose sum is σ = 1432080. Its totient is φ = 1331616.

The previous prime is 1381337. The next prime is 1381349. The reversal of 1381339 is 9331831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1381339 - 2¹ = 1381337 is a prime.

It is a Duffinian number.

1381339 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1381337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3357 + ... + 3745.

It is an arithmetic number, because the mean of its divisors is an integer number (179010).

2^1381339 is an apocalyptic number.

1381339 is a deficient number, since it is larger than the sum of its proper divisors (50741).

1381339 is an equidigital number, since it uses as much as digits as its factorization.

1381339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

The product of its digits is 1944, while the sum is 28.

The square root of 1381339 is about 1175.3037905155. The cubic root of 1381339 is about 111.3696251421.

The spelling of 1381339 in words is "one million, three hundred eighty-one thousand, three hundred thirty-nine".