400002444224 has 14 divisors (see below), whose sum is σ = 793754850384. Its totient is φ = 200001222080.

The previous prime is 400002444217. The next prime is 400002444229. The reversal of 400002444224 is 422444200004.

It is a junction number, because it is equal to n+sod(n) for n = 400002444193 and 400002444202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400002444229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3125019032 + ... + 3125019159.

Almost surely, 2^400002444224 is an apocalyptic number.

It is an amenable number.

400002444224 is a deficient number, since it is larger than the sum of its proper divisors (393752406160).

400002444224 is an equidigital number, since it uses as much as digits as its factorization.

400002444224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6250038203 (or 6250038193 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 400002444224 its reverse (422444200004), we get a palindrome (822446644228).

The spelling of 400002444224 in words is "four hundred billion, two million, four hundred forty-four thousand, two hundred twenty-four".