83949 has 4 divisors (see below), whose sum is σ = 111936. Its totient is φ = 55964.

The previous prime is 83939. The next prime is 83969. The reversal of 83949 is 94938.

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 83949 - 2⁴ = 83933 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13989 + ... + 13994.

It is an arithmetic number, because the mean of its divisors is an integer number (27984).

2⁸³⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

83949 is a deficient number, since it is larger than the sum of its proper divisors (27987).

83949 is a wasteful number, since it uses less digits than its factorization.

83949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27986.

The product of its digits is 7776, while the sum is 33.

The square root of 83949 is about 289.7395382063. The cubic root of 83949 is about 43.7863262920.

It can be divided in two parts, 839 and 49, that added together give a palindrome (888).

The spelling of 83949 in words is "eighty-three thousand, nine hundred forty-nine".