88020209 has 2 divisors, whose sum is σ = 88020210. Its totient is φ = 88020208.

The previous prime is 88020161. The next prime is 88020281. The reversal of 88020209 is 90202088.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74770609 + 13249600 = 8647^2 + 3640^2 .

It is a cyclic number.

It is not a de Polignac number, because 88020209 - 2¹⁶ = 87954673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (88020109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44010104 + 44010105.

It is an arithmetic number, because the mean of its divisors is an integer number (44010105).

Almost surely, 2^88020209 is an apocalyptic number.

It is an amenable number.

88020209 is a deficient number, since it is larger than the sum of its proper divisors (1).

88020209 is an equidigital number, since it uses as much as digits as its factorization.

88020209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 88020209 is about 9381.9086011323. The cubic root of 88020209 is about 444.8300643060.

The spelling of 88020209 in words is "eighty-eight million, twenty thousand, two hundred nine".