400223143 has 8 divisors (see below), whose sum is σ = 402738336. Its totient is φ = 397716000.

The previous prime is 400223141. The next prime is 400223149. The reversal of 400223143 is 341322004.

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 400223143 - 2¹ = 400223141 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 400223143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400223141) 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, 119593 + ... + 122893.

It is an arithmetic number, because the mean of its divisors is an integer number (50342292).

Almost surely, 2^400223143 is an apocalyptic number.

400223143 is a deficient number, since it is larger than the sum of its proper divisors (2515193).

400223143 is a wasteful number, since it uses less digits than its factorization.

400223143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4025.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 400223143 is about 20005.5777972045. The cubic root of 400223143 is about 736.9432852319.

Adding to 400223143 its reverse (341322004), we get a palindrome (741545147).

The spelling of 400223143 in words is "four hundred million, two hundred twenty-three thousand, one hundred forty-three".