139923 has 12 divisors (see below), whose sum is σ = 231088. Its totient is φ = 79920.

The previous prime is 139921. The next prime is 139939. The reversal of 139923 is 329931.

It is not a de Polignac number, because 139923 - 2¹ = 139921 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139923.

It is not an unprimeable number, because it can be changed into a prime (139921) 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 11 ways as a sum of consecutive naturals, for example, 1048 + ... + 1173.

2¹³⁹⁹²³ is an apocalyptic number.

139923 is a deficient number, since it is larger than the sum of its proper divisors (91165).

139923 is a wasteful number, since it uses less digits than its factorization.

139923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234 (or 2231 counting only the distinct ones).

The product of its digits is 1458, while the sum is 27.

The square root of 139923 is about 374.0628289472. The cubic root of 139923 is about 51.9154197002.

The spelling of 139923 in words is "one hundred thirty-nine thousand, nine hundred twenty-three".