85647039 has 4 divisors (see below), whose sum is σ = 114196056. Its totient is φ = 57098024.

The previous prime is 85647011. The next prime is 85647047. The reversal of 85647039 is 93074658.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 85647039 - 2⁵ = 85647007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85647059) 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, 14274504 + ... + 14274509.

It is an arithmetic number, because the mean of its divisors is an integer number (28549014).

Almost surely, 2^85647039 is an apocalyptic number.

85647039 is a deficient number, since it is larger than the sum of its proper divisors (28549017).

85647039 is a wasteful number, since it uses less digits than its factorization.

85647039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28549016.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 85647039 is about 9254.5685474797. The cubic root of 85647039 is about 440.7958032649.

It can be divided in two parts, 856 and 47039, that added together give a triangular number (47895 = T₃₀₉).

The spelling of 85647039 in words is "eighty-five million, six hundred forty-seven thousand, thirty-nine".