1001339 has 4 divisors (see below), whose sum is σ = 1012680. Its totient is φ = 990000.

The previous prime is 1001327. The next prime is 1001347. The reversal of 1001339 is 9331001.

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 1001339 - 2⁴ = 1001323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001369) 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, 5537 + ... + 5714.

It is an arithmetic number, because the mean of its divisors is an integer number (253170).

2^1001339 is an apocalyptic number.

1001339 is a deficient number, since it is larger than the sum of its proper divisors (11341).

1001339 is an equidigital number, since it uses as much as digits as its factorization.

1001339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11340.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1001339 is about 1000.6692760348. The cubic root of 1001339 is about 100.0446134268.

The spelling of 1001339 in words is "one million, one thousand, three hundred thirty-nine".