75390009 has 8 divisors (see below), whose sum is σ = 102416832. Its totient is φ = 49311600.

The previous prime is 75389999. The next prime is 75390011. The reversal of 75390009 is 90009357.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75390009 - 2¹² = 75385913 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (75390409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236917 + ... + 237234.

It is an arithmetic number, because the mean of its divisors is an integer number (12802104).

Almost surely, 2^75390009 is an apocalyptic number.

It is an amenable number.

75390009 is a deficient number, since it is larger than the sum of its proper divisors (27026823).

75390009 is a wasteful number, since it uses less digits than its factorization.

75390009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474207.

The product of its (nonzero) digits is 8505, while the sum is 33.

The square root of 75390009 is about 8682.7420208135. The cubic root of 75390009 is about 422.4460610623.

The spelling of 75390009 in words is "seventy-five million, three hundred ninety thousand, nine".