400412222 has 24 divisors (see below), whose sum is σ = 722775960. Its totient is φ = 165686640.

The previous prime is 400412171. The next prime is 400412231. The reversal of 400412222 is 222214004.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 400412222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67604 + ... + 73287.

It is an arithmetic number, because the mean of its divisors is an integer number (30115665).

Almost surely, 2^400412222 is an apocalyptic number.

400412222 is a deficient number, since it is larger than the sum of its proper divisors (322363738).

400412222 is a wasteful number, since it uses less digits than its factorization.

400412222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140936 (or 140929 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 400412222 is about 20010.3028962582. The cubic root of 400412222 is about 737.0593193032.

Adding to 400412222 its reverse (222214004), we get a palindrome (622626226).

The spelling of 400412222 in words is "four hundred million, four hundred twelve thousand, two hundred twenty-two".