400211224 has 48 divisors (see below), whose sum is σ = 910882800. Its totient is φ = 164058048.

The previous prime is 400211221. The next prime is 400211237. The reversal of 400211224 is 422112004.

It is a junction number, because it is equal to n+sod(n) for n = 400211198 and 400211207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400211221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13179 + ... + 31210.

It is an arithmetic number, because the mean of its divisors is an integer number (18976725).

Almost surely, 2^400211224 is an apocalyptic number.

It is an amenable number.

400211224 is an abundant number, since it is smaller than the sum of its proper divisors (510671576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400211224 is a wasteful number, since it uses less digits than its factorization.

400211224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44432 (or 44421 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 400211224 is about 20005.2799030656. The cubic root of 400211224 is about 736.9359695512.

Adding to 400211224 its reverse (422112004), we get a palindrome (822323228).

The spelling of 400211224 in words is "four hundred million, two hundred eleven thousand, two hundred twenty-four".