400221484 has 24 divisors (see below), whose sum is σ = 754815600. Its totient is φ = 184582464.

The previous prime is 400221473. The next prime is 400221509. The reversal of 400221484 is 484122004.

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 in 7 ways as a sum of consecutive naturals, for example, 119667 + ... + 122965.

It is an arithmetic number, because the mean of its divisors is an integer number (31450650).

Almost surely, 2^400221484 is an apocalyptic number.

It is an amenable number.

400221484 is a deficient number, since it is larger than the sum of its proper divisors (354594116).

400221484 is a wasteful number, since it uses less digits than its factorization.

400221484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5649 (or 5647 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 400221484 is about 20005.5363337252. The cubic root of 400221484 is about 736.9422669744.

Adding to 400221484 its reverse (484122004), we get a palindrome (884343488).

The spelling of 400221484 in words is "four hundred million, two hundred twenty-one thousand, four hundred eighty-four".