304540069 has 2 divisors, whose sum is σ = 304540070. Its totient is φ = 304540068.

The previous prime is 304540051. The next prime is 304540099. The reversal of 304540069 is 960045403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253987969 + 50552100 = 15937^2 + 7110^2 .

It is a cyclic number.

It is not a de Polignac number, because 304540069 - 2¹¹ = 304538021 is a prime.

It is a super-3 number, since 3×304540069³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 304540069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304540099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152270034 + 152270035.

It is an arithmetic number, because the mean of its divisors is an integer number (152270035).

Almost surely, 2^304540069 is an apocalyptic number.

It is an amenable number.

304540069 is a deficient number, since it is larger than the sum of its proper divisors (1).

304540069 is an equidigital number, since it uses as much as digits as its factorization.

304540069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 304540069 is about 17451.0764424433. The cubic root of 304540069 is about 672.7930253365.

The spelling of 304540069 in words is "three hundred four million, five hundred forty thousand, sixty-nine".