85865149 has 4 divisors (see below), whose sum is σ = 85982080. Its totient is φ = 85748220.

The previous prime is 85865107. The next prime is 85865159. The reversal of 85865149 is 94156858.

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.

It is a cyclic number.

It is not a de Polignac number, because 85865149 - 2¹¹ = 85863101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85865099 and 85865108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85865159) 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, 57357 + ... + 58834.

It is an arithmetic number, because the mean of its divisors is an integer number (21495520).

Almost surely, 2^85865149 is an apocalyptic number.

It is an amenable number.

85865149 is a deficient number, since it is larger than the sum of its proper divisors (116931).

85865149 is a wasteful number, since it uses less digits than its factorization.

85865149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116930.

The product of its digits is 345600, while the sum is 46.

The square root of 85865149 is about 9266.3449644399. The cubic root of 85865149 is about 441.1696650931.

The spelling of 85865149 in words is "eighty-five million, eight hundred sixty-five thousand, one hundred forty-nine".