400400020223 has 8 divisors (see below), whose sum is σ = 457604075520. Its totient is φ = 343196978040.

The previous prime is 400400020183. The next prime is 400400020247. The reversal of 400400020223 is 322020004004.

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

It is not a de Polignac number, because 400400020223 - 2¹² = 400400016127 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 (400400023223) 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, 1021118 + ... + 1357748.

It is an arithmetic number, because the mean of its divisors is an integer number (57200509440).

Almost surely, 2^400400020223 is an apocalyptic number.

400400020223 is a deficient number, since it is larger than the sum of its proper divisors (57204055297).

400400020223 is a wasteful number, since it uses less digits than its factorization.

400400020223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506557.

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

Adding to 400400020223 its reverse (322020004004), we get a palindrome (722420024227).

The spelling of 400400020223 in words is "four hundred billion, four hundred million, twenty thousand, two hundred twenty-three".