4023239 has 4 divisors (see below), whose sum is σ = 4389000. Its totient is φ = 3657480.

The previous prime is 4023223. The next prime is 4023241. The reversal of 4023239 is 9323204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4023239 - 2⁴ = 4023223 is a prime.

It is a super-2 number, since 2×4023239² = 32372904102242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4025239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182864 + ... + 182885.

It is an arithmetic number, because the mean of its divisors is an integer number (1097250).

Almost surely, 2^4023239 is an apocalyptic number.

4023239 is a deficient number, since it is larger than the sum of its proper divisors (365761).

4023239 is a wasteful number, since it uses less digits than its factorization.

4023239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365760.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 4023239 is about 2005.8013361248. The cubic root of 4023239 is about 159.0469252212.

The spelling of 4023239 in words is "four million, twenty-three thousand, two hundred thirty-nine".