400224002 has 8 divisors (see below), whose sum is σ = 601350156. Its totient is φ = 199773952.

The previous prime is 400223969. The next prime is 400224007. The reversal of 400224002 is 200422004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 393665281 + 6558721 = 19841^2 + 2561^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (400224007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167543 + ... + 169914.

Almost surely, 2^400224002 is an apocalyptic number.

400224002 is a deficient number, since it is larger than the sum of its proper divisors (201126154).

400224002 is a wasteful number, since it uses less digits than its factorization.

400224002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338052.

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

The square root of 400224002 is about 20005.5992662054. The cubic root of 400224002 is about 736.9438124660.

Adding to 400224002 its reverse (200422004), we get a palindrome (600646006).

The spelling of 400224002 in words is "four hundred million, two hundred twenty-four thousand, two".