939009 has 4 divisors (see below), whose sum is σ = 1252016. Its totient is φ = 626004.

The previous prime is 939007. The next prime is 939011. The reversal of 939009 is 900939.

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 an interprime number because it is at equal distance from previous prime (939007) and next prime (939011).

It is not a de Polignac number, because 939009 - 2¹ = 939007 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (939007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156499 + ... + 156504.

It is an arithmetic number, because the mean of its divisors is an integer number (313004).

It is a Proth number, since it is equal to 917 ⋅ 2¹⁰ + 1 and 917 < 2¹⁰.

2⁹³⁹⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

939009 is a deficient number, since it is larger than the sum of its proper divisors (313007).

939009 is a wasteful number, since it uses less digits than its factorization.

939009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313006.

The product of its (nonzero) digits is 2187, while the sum is 30.

The square root of 939009 is about 969.0247674853. The cubic root of 939009 is about 97.9241743049.

The spelling of 939009 in words is "nine hundred thirty-nine thousand, nine".