4009923 has 12 divisors (see below), whose sum is σ = 5933928. Its totient is φ = 2607840.

The previous prime is 4009921. The next prime is 4009933. The reversal of 4009923 is 3299004.

It is not a de Polignac number, because 4009923 - 2¹ = 4009921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4009921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5065 + ... + 5802.

It is an arithmetic number, because the mean of its divisors is an integer number (494494).

Almost surely, 2^4009923 is an apocalyptic number.

4009923 is a deficient number, since it is larger than the sum of its proper divisors (1924005).

4009923 is a wasteful number, since it uses less digits than its factorization.

4009923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10914 (or 10911 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 4009923 is about 2002.4792133753. The cubic root of 4009923 is about 158.8712616397.

The spelling of 4009923 in words is "four million, nine thousand, nine hundred twenty-three".