400244244 has 24 divisors (see below), whose sum is σ = 959144928. Its totient is φ = 129808800.

The previous prime is 400244239. The next prime is 400244261. The reversal of 400244244 is 442442004.

It is a congruent number.

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, 450282 + ... + 451169.

It is an arithmetic number, because the mean of its divisors is an integer number (39964372).

Almost surely, 2^400244244 is an apocalyptic number.

It is an amenable number.

400244244 is an abundant number, since it is smaller than the sum of its proper divisors (558900684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400244244 is a wasteful number, since it uses less digits than its factorization.

400244244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901495 (or 901493 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 400244244 is about 20006.1051681730. The cubic root of 400244244 is about 736.9562363129.

Adding to 400244244 its reverse (442442004), we get a palindrome (842686248).

The spelling of 400244244 in words is "four hundred million, two hundred forty-four thousand, two hundred forty-four".