85307039 has 4 divisors (see below), whose sum is σ = 85549056. Its totient is φ = 85065024.

The previous prime is 85307029. The next prime is 85307041. The reversal of 85307039 is 93070358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93070358 = 2 ⋅46535179.

It is a cyclic number.

It is not a de Polignac number, because 85307039 - 2²⁴ = 68529823 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 (85307029) 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, 120479 + ... + 121184.

It is an arithmetic number, because the mean of its divisors is an integer number (21387264).

Almost surely, 2^85307039 is an apocalyptic number.

85307039 is a deficient number, since it is larger than the sum of its proper divisors (242017).

85307039 is a wasteful number, since it uses less digits than its factorization.

85307039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242016.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 85307039 is about 9236.1809748402. The cubic root of 85307039 is about 440.2117420948.

The spelling of 85307039 in words is "eighty-five million, three hundred seven thousand, thirty-nine".