85714109 has 8 divisors (see below), whose sum is σ = 92778840. Its totient is φ = 78716736.

The previous prime is 85714103. The next prime is 85714117. The reversal of 85714109 is 90141758.

It can be written as a sum of positive squares in 4 ways, for example, as 14784025 + 70930084 = 3845^2 + 8422^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85714109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85714103) 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, 14174 + ... + 19295.

It is an arithmetic number, because the mean of its divisors is an integer number (11597355).

Almost surely, 2^85714109 is an apocalyptic number.

It is an amenable number.

85714109 is a deficient number, since it is larger than the sum of its proper divisors (7064731).

85714109 is a wasteful number, since it uses less digits than its factorization.

85714109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33679.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 85714109 is about 9258.1914540584. The cubic root of 85714109 is about 440.9108353042.

The spelling of 85714109 in words is "eighty-five million, seven hundred fourteen thousand, one hundred nine".