306469 has 4 divisors (see below), whose sum is σ = 308844. Its totient is φ = 304096.

The previous prime is 306463. The next prime is 306473. The reversal of 306469 is 964603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 964603 = 541 ⋅1783.

It can be written as a sum of positive squares in 2 ways, for example, as 213444 + 93025 = 462^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 306469 - 2⁵ = 306437 is a prime.

It is a super-2 number, since 2×306469² = 187846495922, which contains 22 as substring.

It is a Duffinian number.

306469 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306463) 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, 982 + ... + 1255.

It is an arithmetic number, because the mean of its divisors is an integer number (77211).

2³⁰⁶⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

306469 is a deficient number, since it is larger than the sum of its proper divisors (2375).

306469 is a wasteful number, since it uses less digits than its factorization.

306469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 306469 is about 553.5964233989. The cubic root of 306469 is about 67.4210508141.

The spelling of 306469 in words is "three hundred six thousand, four hundred sixty-nine".