4005923 has 8 divisors (see below), whose sum is σ = 4171200. Its totient is φ = 3844008.

The previous prime is 4005917. The next prime is 4005943. The reversal of 4005923 is 3295004.

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 4005923 - 2¹² = 4001827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4005943) 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, 1748 + ... + 3326.

It is an arithmetic number, because the mean of its divisors is an integer number (521400).

Almost surely, 2^4005923 is an apocalyptic number.

4005923 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

4005923 is a deficient number, since it is larger than the sum of its proper divisors (165277).

4005923 is a wasteful number, since it uses less digits than its factorization.

4005923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 4005923 is about 2001.4802022503. The cubic root of 4005923 is about 158.8184180259.

The spelling of 4005923 in words is "four million, five thousand, nine hundred twenty-three".