23947 has 8 divisors (see below), whose sum is σ = 29952. Its totient is φ = 18600.

The previous prime is 23929. The next prime is 23957. The reversal of 23947 is 74932.

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 23947 - 2⁷ = 23819 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 3⁷ + 9³ + 4⁶ + 7⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79 + ... + 232.

It is an arithmetic number, because the mean of its divisors is an integer number (3744).

2²³⁹⁴⁷ is an apocalyptic number.

23947 is a deficient number, since it is larger than the sum of its proper divisors (6005).

23947 is a wasteful number, since it uses less digits than its factorization.

23947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329.

The product of its digits is 1512, while the sum is 25.

The square root of 23947 is about 154.7481825418. The cubic root of 23947 is about 28.8237426383.

It can be divided in two parts, 2394 and 7, that added together give a 4-th power (2401 = 7⁴).

The spelling of 23947 in words is "twenty-three thousand, nine hundred forty-seven".