88000009 has 2 divisors, whose sum is σ = 88000010. Its totient is φ = 88000008.

The previous prime is 87999997. The next prime is 88000019. The reversal of 88000009 is 90000088.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73960000 + 14040009 = 8600^2 + 3747^2 .

It is a cyclic number.

It is not a de Polignac number, because 88000009 - 2¹³ = 87991817 is a prime.

It is not a weakly prime, because it can be changed into another prime (88000019) 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, 44000004 + 44000005.

It is an arithmetic number, because the mean of its divisors is an integer number (44000005).

Almost surely, 2^88000009 is an apocalyptic number.

It is an amenable number.

88000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

88000009 is an equidigital number, since it uses as much as digits as its factorization.

88000009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 88000009 is about 9380.8319993485. The cubic root of 88000009 is about 444.7960332774.

The spelling of 88000009 in words is "eighty-eight million, nine", and thus it is an aban number and an uban number.