74500009 has 2 divisors, whose sum is σ = 74500010. Its totient is φ = 74500008.

The previous prime is 74499989. The next prime is 74500051. The reversal of 74500009 is 90000547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64080025 + 10419984 = 8005^2 + 3228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74500009 is a prime.

It is not a weakly prime, because it can be changed into another prime (74500079) 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, 37250004 + 37250005.

It is an arithmetic number, because the mean of its divisors is an integer number (37250005).

Almost surely, 2^74500009 is an apocalyptic number.

It is an amenable number.

74500009 is a deficient number, since it is larger than the sum of its proper divisors (1).

74500009 is an equidigital number, since it uses as much as digits as its factorization.

74500009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 74500009 is about 8631.3387721720. The cubic root of 74500009 is about 420.7771118916. Note that the first 3 decimals are identical.

The spelling of 74500009 in words is "seventy-four million, five hundred thousand, nine".