85549039 has 4 divisors (see below), whose sum is σ = 90051640. Its totient is φ = 81046440.

The previous prime is 85549027. The next prime is 85549067. The reversal of 85549039 is 93094558.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93094558 = 2 ⋅46547279.

It is a cyclic number.

It is not a de Polignac number, because 85549039 - 2⁵ = 85549007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85548986 and 85549004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85519039) 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, 2251272 + ... + 2251309.

It is an arithmetic number, because the mean of its divisors is an integer number (22512910).

Almost surely, 2^85549039 is an apocalyptic number.

85549039 is a deficient number, since it is larger than the sum of its proper divisors (4502601).

85549039 is a wasteful number, since it uses less digits than its factorization.

85549039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502600.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 85549039 is about 9249.2723497581. The cubic root of 85549039 is about 440.6276150206.

It can be divided in two parts, 855 and 49039, that added together give a palindrome (49894).

The spelling of 85549039 in words is "eighty-five million, five hundred forty-nine thousand, thirty-nine".