8040423 has 4 divisors (see below), whose sum is σ = 10720568. Its totient is φ = 5360280.

The previous prime is 8040421. The next prime is 8040437. The reversal of 8040423 is 3240408.

It is a happy number.

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

It is not a de Polignac number, because 8040423 - 2¹ = 8040421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8040423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8040421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340068 + ... + 1340073.

It is an arithmetic number, because the mean of its divisors is an integer number (2680142).

Almost surely, 2^8040423 is an apocalyptic number.

8040423 is a deficient number, since it is larger than the sum of its proper divisors (2680145).

8040423 is a wasteful number, since it uses less digits than its factorization.

8040423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680144.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 8040423 is about 2835.5639650694. The cubic root of 8040423 is about 200.3362925530.

The spelling of 8040423 in words is "eight million, forty thousand, four hundred twenty-three".