309069 has 8 divisors (see below), whose sum is σ = 457920. Its totient is φ = 206028.

The previous prime is 309059. The next prime is 309079. The reversal of 309069 is 960903.

It is an interprime number because it is at equal distance from previous prime (309059) and next prime (309079).

It is not a de Polignac number, because 309069 - 2⁵ = 309037 is a prime.

It is a super-2 number, since 2×309069² = 191047293522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 11447 = 309069 / (3 + 0 + 9 + 0 + 6 + 9).

309069 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 309069.

It is not an unprimeable number, because it can be changed into a prime (309019) 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 7 ways as a sum of consecutive naturals, for example, 5697 + ... + 5750.

It is an arithmetic number, because the mean of its divisors is an integer number (57240).

2³⁰⁹⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

309069 is a deficient number, since it is larger than the sum of its proper divisors (148851).

309069 is a wasteful number, since it uses less digits than its factorization.

309069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11456 (or 11450 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 309069 is about 555.9397449364. The cubic root of 309069 is about 67.6111748154.

The spelling of 309069 in words is "three hundred nine thousand, sixty-nine".