400222244424 has 16 divisors (see below), whose sum is σ = 1000555611120. Its totient is φ = 133407414800.

The previous prime is 400222244423. The next prime is 400222244449. The reversal of 400222244424 is 424442222004.

It is a happy number.

400222244424 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 400222244391 and 400222244400.

It is not an unprimeable number, because it can be changed into a prime (400222244423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8337963402 + ... + 8337963449.

It is an arithmetic number, because the mean of its divisors is an integer number (62534725695).

Almost surely, 2^400222244424 is an apocalyptic number.

It is an amenable number.

400222244424 is an abundant number, since it is smaller than the sum of its proper divisors (600333366696).

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

400222244424 is a wasteful number, since it uses less digits than its factorization.

400222244424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16675926860 (or 16675926856 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 400222244424 its reverse (424442222004), we get a palindrome (824664466428).

The spelling of 400222244424 in words is "four hundred billion, two hundred twenty-two million, two hundred forty-four thousand, four hundred twenty-four".