85495009 has 4 divisors (see below), whose sum is σ = 86251716. Its totient is φ = 84738304.

The previous prime is 85494973. The next prime is 85495019. The reversal of 85495009 is 90059458.

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 3411409 + 82083600 = 1847^2 + 9060^2 .

It is a cyclic number.

It is not a de Polignac number, because 85495009 - 2¹⁵ = 85462241 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85495019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378184 + ... + 378409.

It is an arithmetic number, because the mean of its divisors is an integer number (21562929).

Almost surely, 2^85495009 is an apocalyptic number.

It is an amenable number.

85495009 is a deficient number, since it is larger than the sum of its proper divisors (756707).

85495009 is a wasteful number, since it uses less digits than its factorization.

85495009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756706.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 85495009 is about 9246.3511181438. The cubic root of 85495009 is about 440.5348334456.

The spelling of 85495009 in words is "eighty-five million, four hundred ninety-five thousand, nine".