400002440224 has 24 divisors (see below), whose sum is σ = 788615575020. Its totient is φ = 199719119616.

The previous prime is 400002440191. The next prime is 400002440269. The reversal of 400002440224 is 422044200004.

It can be written as a sum of positive squares in 2 ways, for example, as 399651552400 + 350887824 = 632180^2 + 18732^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400002440195 and 400002440204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8792599 + ... + 8837974.

Almost surely, 2^400002440224 is an apocalyptic number.

It is an amenable number.

400002440224 is a deficient number, since it is larger than the sum of its proper divisors (388613134796).

400002440224 is a wasteful number, since it uses less digits than its factorization.

400002440224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17631292 (or 17631284 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 400002440224 its reverse (422044200004), we get a palindrome (822046640228).

The spelling of 400002440224 in words is "four hundred billion, two million, four hundred forty thousand, two hundred twenty-four".