4005023 has 8 divisors (see below), whose sum is σ = 4383696. Its totient is φ = 3628800.

The previous prime is 4005019. The next prime is 4005049. The reversal of 4005023 is 3205004.

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 4005023 - 2² = 4005019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4004989 and 4005007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005223) 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, 5615 + ... + 6287.

It is an arithmetic number, because the mean of its divisors is an integer number (547962).

Almost surely, 2^4005023 is an apocalyptic number.

4005023 is a deficient number, since it is larger than the sum of its proper divisors (378673).

4005023 is a wasteful number, since it uses less digits than its factorization.

4005023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 4005023 is about 2001.2553560203. The cubic root of 4005023 is about 158.8065233654.

The spelling of 4005023 in words is "four million, five thousand, twenty-three".