305469 has 6 divisors (see below), whose sum is σ = 441246. Its totient is φ = 203640.

The previous prime is 305449. The next prime is 305471. The reversal of 305469 is 964503.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 260100 + 45369 = 510^2 + 213^2 .

It is not a de Polignac number, because 305469 - 2¹¹ = 303421 is a prime.

It is a super-2 number, since 2×305469² = 186622619922, which contains 22 as substring.

305469 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 305469.

It is not an unprimeable number, because it can be changed into a prime (305419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16962 + ... + 16979.

It is an arithmetic number, because the mean of its divisors is an integer number (73541).

2³⁰⁵⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

305469 is a deficient number, since it is larger than the sum of its proper divisors (135777).

305469 is a wasteful number, since it uses less digits than its factorization.

305469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33947 (or 33944 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 305469 is about 552.6925004014. The cubic root of 305469 is about 67.3476398926.

The spelling of 305469 in words is "three hundred five thousand, four hundred sixty-nine".