400004423 has 8 divisors (see below), whose sum is σ = 492313248. Its totient is φ = 316486944.

The previous prime is 400004419. The next prime is 400004471. The reversal of 400004423 is 324400004.

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

It is a cyclic number.

It is not a de Polignac number, because 400004423 - 2² = 400004419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400004123) 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, 2197736 + ... + 2197917.

It is an arithmetic number, because the mean of its divisors is an integer number (61539156).

Almost surely, 2^400004423 is an apocalyptic number.

400004423 is a deficient number, since it is larger than the sum of its proper divisors (92308825).

400004423 is a wasteful number, since it uses less digits than its factorization.

400004423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395673.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 400004423 is about 20000.1105746943. The cubic root of 400004423 is about 736.8090154633.

Adding to 400004423 its reverse (324400004), we get a palindrome (724404427).

The spelling of 400004423 in words is "four hundred million, four thousand, four hundred twenty-three".