39923 has 8 divisors (see below), whose sum is σ = 44688. Its totient is φ = 35424.

The previous prime is 39901. The next prime is 39929. The reversal of 39923 is 32993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39923 - 2⁸ = 39667 is a prime.

It is a super-3 number, since 3×39923³ = 190893333070401, which contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39892 and 39901.

It is not an unprimeable number, because it can be changed into a prime (39929) 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 7 ways as a sum of consecutive naturals, for example, 440 + ... + 522.

It is an arithmetic number, because the mean of its divisors is an integer number (5586).

2³⁹⁹²³ is an apocalyptic number.

39923 is a deficient number, since it is larger than the sum of its proper divisors (4765).

39923 is a wasteful number, since it uses less digits than its factorization.

39923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133.

The product of its digits is 1458, while the sum is 26.

The square root of 39923 is about 199.8074072701. The cubic root of 39923 is about 34.1775601460.

The spelling of 39923 in words is "thirty-nine thousand, nine hundred twenty-three".