88085209 has 4 divisors (see below), whose sum is σ = 91122660. Its totient is φ = 85047760.

The previous prime is 88085203. The next prime is 88085251. The reversal of 88085209 is 90258088.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67699984 + 20385225 = 8228^2 + 4515^2 .

It is a cyclic number.

It is not a de Polignac number, because 88085209 - 2⁹ = 88084697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88085203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1518682 + ... + 1518739.

It is an arithmetic number, because the mean of its divisors is an integer number (22780665).

Almost surely, 2^88085209 is an apocalyptic number.

It is an amenable number.

88085209 is a deficient number, since it is larger than the sum of its proper divisors (3037451).

88085209 is a wasteful number, since it uses less digits than its factorization.

88085209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037450.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 88085209 is about 9385.3720757357. The cubic root of 88085209 is about 444.9395347715.

The spelling of 88085209 in words is "eighty-eight million, eighty-five thousand, two hundred nine".