139833 has 8 divisors (see below), whose sum is σ = 207200. Its totient is φ = 93204.

The previous prime is 139831. The next prime is 139837. The reversal of 139833 is 338931.

It is not a de Polignac number, because 139833 - 2¹ = 139831 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5179 = 139833 / (1 + 3 + 9 + 8 + 3 + 3).

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 139797 and 139806.

It is not an unprimeable number, because it can be changed into a prime (139831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2563 + ... + 2616.

It is an arithmetic number, because the mean of its divisors is an integer number (25900).

2¹³⁹⁸³³ is an apocalyptic number.

It is an amenable number.

139833 is a deficient number, since it is larger than the sum of its proper divisors (67367).

139833 is an equidigital number, since it uses as much as digits as its factorization.

139833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188 (or 5182 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 139833 is about 373.9425089502. The cubic root of 139833 is about 51.9042864581.

It can be divided in two parts, 1398 and 33, that added together give a triangular number (1431 = T₅₃).

The spelling of 139833 in words is "one hundred thirty-nine thousand, eight hundred thirty-three".