4000400222 has 32 divisors (see below), whose sum is σ = 7495606272. Its totient is φ = 1558950624.

The previous prime is 4000400207. The next prime is 4000400233. The reversal of 4000400222 is 2220040004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 4000400197 and 4000400206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151838 + ... + 176225.

It is an arithmetic number, because the mean of its divisors is an integer number (234237696).

Almost surely, 2^4000400222 is an apocalyptic number.

4000400222 is a deficient number, since it is larger than the sum of its proper divisors (3495206050).

4000400222 is a wasteful number, since it uses less digits than its factorization.

4000400222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328152.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 4000400222 is about 63248.7171569511. The cubic root of 4000400222 is about 1587.4539929379.

Adding to 4000400222 its reverse (2220040004), we get a palindrome (6220440226).

The spelling of 4000400222 in words is "four billion, four hundred thousand, two hundred twenty-two".