85949 has 4 divisors (see below), whose sum is σ = 87420. Its totient is φ = 84480.

The previous prime is 85933. The next prime is 85991. The reversal of 85949 is 94958.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1849 + 84100 = 43^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 85949 - 2⁴ = 85933 is a prime.

It is a Duffinian number.

85949 is a Rhonda number in base 8.

It is a zygodrome in base 3.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 85949.

It is not an unprimeable number, because it can be changed into a prime (85909) 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, 644 + ... + 765.

It is an arithmetic number, because the mean of its divisors is an integer number (21855).

2⁸⁵⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

85949 is a deficient number, since it is larger than the sum of its proper divisors (1471).

85949 is a wasteful number, since it uses less digits than its factorization.

85949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470.

The product of its digits is 12960, while the sum is 35.

The square root of 85949 is about 293.1705987987. The cubic root of 85949 is about 44.1313225404.

Subtracting 85949 from its reverse (94958), we obtain a palindrome (9009).

The spelling of 85949 in words is "eighty-five thousand, nine hundred forty-nine".