400140223 has 12 divisors (see below), whose sum is σ = 485708400. Its totient is φ = 328064352.

The previous prime is 400140211. The next prime is 400140227. The reversal of 400140223 is 322041004.

It is a de Polignac number, because none of the positive numbers 2^k-400140223 is a prime.

It is a super-2 number, since 2×400140223² = 320224396124979458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400140197 and 400140206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400140227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176398 + ... + 178651.

It is an arithmetic number, because the mean of its divisors is an integer number (40475700).

Almost surely, 2^400140223 is an apocalyptic number.

400140223 is a deficient number, since it is larger than the sum of its proper divisors (85568177).

400140223 is a wasteful number, since it uses less digits than its factorization.

400140223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355086 (or 355079 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400140223 is about 20003.5052678274. The cubic root of 400140223 is about 736.8923873274.

Adding to 400140223 its reverse (322041004), we get a palindrome (722181227).

The spelling of 400140223 in words is "four hundred million, one hundred forty thousand, two hundred twenty-three".