86949 has 6 divisors (see below), whose sum is σ = 125606. Its totient is φ = 57960.
The previous prime is 86939. The next prime is 86951. The reversal of 86949 is 94968.
It can be written as a sum of positive squares in only one way, i.e., 44100 + 42849 = 210^2 + 207^2 .
It is not a de Polignac number, because 86949 - 28 = 86693 is a prime.
It is a Duffinian number.
86949 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (86929) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4822 + ... + 4839.
286949 is an apocalyptic number.
It is an amenable number.
86949 is a deficient number, since it is larger than the sum of its proper divisors (38657).
86949 is a wasteful number, since it uses less digits than its factorization.
86949 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9667 (or 9664 counting only the distinct ones).
The product of its digits is 15552, while the sum is 36.
The square root of 86949 is about 294.8711583048. The cubic root of 86949 is about 44.3018161556.
It can be divided in two parts, 86 and 949, that added together give a triangular number (1035 = T45).
The spelling of 86949 in words is "eighty-six thousand, nine hundred forty-nine".
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