309004 has 12 divisors (see below), whose sum is σ = 549304. Its totient is φ = 152064.

The previous prime is 308999. The next prime is 309007. The reversal of 309004 is 400903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309007) 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, 309 + ... + 844.

2³⁰⁹⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

309004 is a deficient number, since it is larger than the sum of its proper divisors (240300).

309004 is a wasteful number, since it uses less digits than its factorization.

309004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 309004 is about 555.8812822897. The cubic root of 309004 is about 67.6064347364.

Adding to 309004 its reverse (400903), we get a palindrome (709907).

The spelling of 309004 in words is "three hundred nine thousand, four".