306004493 has 2 divisors, whose sum is σ = 306004494. Its totient is φ = 306004492.

The previous prime is 306004459. The next prime is 306004547. The reversal of 306004493 is 394400603.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272976484 + 33028009 = 16522^2 + 5747^2 .

It is an emirp because it is prime and its reverse (394400603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 306004493 - 2¹⁶ = 305938957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306004693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153002246 + 153002247.

It is an arithmetic number, because the mean of its divisors is an integer number (153002247).

Almost surely, 2^306004493 is an apocalyptic number.

It is an amenable number.

306004493 is a deficient number, since it is larger than the sum of its proper divisors (1).

306004493 is an equidigital number, since it uses as much as digits as its factorization.

306004493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 306004493 is about 17492.9841079217. The cubic root of 306004493 is about 673.8697081927.

The spelling of 306004493 in words is "three hundred six million, four thousand, four hundred ninety-three".