400440484 has 6 divisors (see below), whose sum is σ = 700770854. Its totient is φ = 200220240.

The previous prime is 400440479. The next prime is 400440499. The reversal of 400440484 is 484044004.

It can be written as a sum of positive squares in only one way, i.e., 350737984 + 49702500 = 18728^2 + 7050^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 50055057 + ... + 50055064.

Almost surely, 2^400440484 is an apocalyptic number.

It is an amenable number.

400440484 is a deficient number, since it is larger than the sum of its proper divisors (300330370).

400440484 is a wasteful number, since it uses less digits than its factorization.

400440484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100110125 (or 100110123 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

The square root of 400440484 is about 20011.0090700094. The cubic root of 400440484 is about 737.0766599996.

Adding to 400440484 its reverse (484044004), we get a palindrome (884484488).

The spelling of 400440484 in words is "four hundred million, four hundred forty thousand, four hundred eighty-four".