74300309 has 2 divisors, whose sum is σ = 74300310. Its totient is φ = 74300308.

The previous prime is 74300269. The next prime is 74300339. The reversal of 74300309 is 90300347.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70980625 + 3319684 = 8425^2 + 1822^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74300309 is a prime.

It is a Chen prime.

It is equal to p_4355702 and since 74300309 and 4355702 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74300339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37150154 + 37150155.

It is an arithmetic number, because the mean of its divisors is an integer number (37150155).

Almost surely, 2^74300309 is an apocalyptic number.

It is an amenable number.

74300309 is a deficient number, since it is larger than the sum of its proper divisors (1).

74300309 is an equidigital number, since it uses as much as digits as its factorization.

74300309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 74300309 is about 8619.7626997499. The cubic root of 74300309 is about 420.4008059758.

The spelling of 74300309 in words is "seventy-four million, three hundred thousand, three hundred nine".