4040923 has 4 divisors (see below), whose sum is σ = 4082680. Its totient is φ = 3999168.

The previous prime is 4040921. The next prime is 4040941. The reversal of 4040923 is 3290404.

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 4040923 - 2¹ = 4040921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4040894 and 4040903.

It is not an unprimeable number, because it can be changed into a prime (4040921) 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, 20733 + ... + 20926.

It is an arithmetic number, because the mean of its divisors is an integer number (1020670).

Almost surely, 2^4040923 is an apocalyptic number.

4040923 is a deficient number, since it is larger than the sum of its proper divisors (41757).

4040923 is an equidigital number, since it uses as much as digits as its factorization.

4040923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41756.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 4040923 is about 2010.2047159431. The cubic root of 4040923 is about 159.2796129459.

The spelling of 4040923 in words is "four million, forty thousand, nine hundred twenty-three".