85336309 has 4 divisors (see below), whose sum is σ = 85477504. Its totient is φ = 85195116.

The previous prime is 85336297. The next prime is 85336313. The reversal of 85336309 is 90363358.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90363358 = 2 ⋅45181679.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85336309 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 (85336369) 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, 69687 + ... + 70900.

It is an arithmetic number, because the mean of its divisors is an integer number (21369376).

Almost surely, 2^85336309 is an apocalyptic number.

It is an amenable number.

85336309 is a deficient number, since it is larger than the sum of its proper divisors (141195).

85336309 is a wasteful number, since it uses less digits than its factorization.

85336309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141194.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 85336309 is about 9237.7653683128. The cubic root of 85336309 is about 440.2620838738.

The spelling of 85336309 in words is "eighty-five million, three hundred thirty-six thousand, three hundred nine".