404400004023 has 8 divisors (see below), whose sum is σ = 540185747968. Its totient is φ = 269107131384.

The previous prime is 404400004009. The next prime is 404400004031. The reversal of 404400004023 is 320400004404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 404400004023 - 2⁵ = 404400003991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404400004123) 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, 123215911 + ... + 123219192.

It is an arithmetic number, because the mean of its divisors is an integer number (67523218496).

Almost surely, 2^404400004023 is an apocalyptic number.

404400004023 is a deficient number, since it is larger than the sum of its proper divisors (135785743945).

404400004023 is a wasteful number, since it uses less digits than its factorization.

404400004023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246435653.

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 404400004023 its reverse (320400004404), we get a palindrome (724800008427).

The spelling of 404400004023 in words is "four hundred four billion, four hundred million, four thousand, twenty-three".