75008009 has 2 divisors, whose sum is σ = 75008010. Its totient is φ = 75008008.

The previous prime is 75007997. The next prime is 75008033. The reversal of 75008009 is 90080057.

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., 53875600 + 21132409 = 7340^2 + 4597^2 .

It is a cyclic number.

It is not a de Polignac number, because 75008009 - 2²⁴ = 58230793 is a prime.

It is not a weakly prime, because it can be changed into another prime (75008069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37504004 + 37504005.

It is an arithmetic number, because the mean of its divisors is an integer number (37504005).

Almost surely, 2^75008009 is an apocalyptic number.

It is an amenable number.

75008009 is a deficient number, since it is larger than the sum of its proper divisors (1).

75008009 is an equidigital number, since it uses as much as digits as its factorization.

75008009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 75008009 is about 8660.7164253311. The cubic root of 75008009 is about 421.7313433437.

The spelling of 75008009 in words is "seventy-five million, eight thousand, nine".