74289307 has 2 divisors, whose sum is σ = 74289308. Its totient is φ = 74289306.

The previous prime is 74289289. The next prime is 74289311. The reversal of 74289307 is 70398247.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74289307 - 2¹¹ = 74287259 is a prime.

It is a super-2 number, since 2×74289307² = 11037802269080498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74289307.

It is not a weakly prime, because it can be changed into another prime (74289407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37144653 + 37144654.

It is an arithmetic number, because the mean of its divisors is an integer number (37144654).

Almost surely, 2^74289307 is an apocalyptic number.

74289307 is a deficient number, since it is larger than the sum of its proper divisors (1).

74289307 is an equidigital number, since it uses as much as digits as its factorization.

74289307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 74289307 is about 8619.1244915014. The cubic root of 74289307 is about 420.3800547028.

The spelling of 74289307 in words is "seventy-four million, two hundred eighty-nine thousand, three hundred seven".