404034023 has 4 divisors (see below), whose sum is σ = 404214360. Its totient is φ = 403853688.

The previous prime is 404034011. The next prime is 404034047. The reversal of 404034023 is 320430404.

It is a happy number.

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 404034023 - 2⁸ = 404033767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404033986 and 404034004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404034073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86765 + ... + 91302.

It is an arithmetic number, because the mean of its divisors is an integer number (101053590).

Almost surely, 2^404034023 is an apocalyptic number.

404034023 is a deficient number, since it is larger than the sum of its proper divisors (180337).

404034023 is a wasteful number, since it uses less digits than its factorization.

404034023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180336.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 404034023 is about 20100.5975781816. The cubic root of 404034023 is about 739.2749307711.

Adding to 404034023 its reverse (320430404), we get a palindrome (724464427).

The spelling of 404034023 in words is "four hundred four million, thirty-four thousand, twenty-three".