400244450 has 12 divisors (see below), whose sum is σ = 744454770. Its totient is φ = 160097760.

The previous prime is 400244417. The next prime is 400244479. The reversal of 400244450 is 54442004.

It can be written as a sum of positive squares in 3 ways, for example, as 320517409 + 79727041 = 17903^2 + 8929^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4002395 + ... + 4002494.

Almost surely, 2^400244450 is an apocalyptic number.

400244450 is a deficient number, since it is larger than the sum of its proper divisors (344210320).

400244450 is a wasteful number, since it uses less digits than its factorization.

400244450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8004901 (or 8004896 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 400244450 is about 20006.1103166008. The cubic root of 400244450 is about 736.9563627464.

Adding to 400244450 its reverse (54442004), we get a palindrome (454686454).

The spelling of 400244450 in words is "four hundred million, two hundred forty-four thousand, four hundred fifty".