1382009 has 4 divisors (see below), whose sum is σ = 1402704. Its totient is φ = 1361316.

The previous prime is 1381999. The next prime is 1382021. The reversal of 1382009 is 9002831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1382009 - 2⁴ = 1381993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1382039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10247 + ... + 10380.

It is an arithmetic number, because the mean of its divisors is an integer number (350676).

2^1382009 is an apocalyptic number.

It is an amenable number.

1382009 is a deficient number, since it is larger than the sum of its proper divisors (20695).

1382009 is an equidigital number, since it uses as much as digits as its factorization.

1382009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20694.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1382009 is about 1175.5887886502. The cubic root of 1382009 is about 111.3876283472.

The spelling of 1382009 in words is "one million, three hundred eighty-two thousand, nine".