400242244 has 6 divisors (see below), whose sum is σ = 700423934. Its totient is φ = 200121120.

The previous prime is 400242217. The next prime is 400242257. The reversal of 400242244 is 442242004.

It can be written as a sum of positive squares in only one way, i.e., 389272900 + 10969344 = 19730^2 + 3312^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50030277 + ... + 50030284.

Almost surely, 2^400242244 is an apocalyptic number.

It is an amenable number.

400242244 is a deficient number, since it is larger than the sum of its proper divisors (300181690).

400242244 is a wasteful number, since it uses less digits than its factorization.

400242244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100060565 (or 100060563 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 400242244 is about 20006.0551833689. The cubic root of 400242244 is about 736.9550087999.

Adding to 400242244 its reverse (442242004), we get a palindrome (842484248).

The spelling of 400242244 in words is "four hundred million, two hundred forty-two thousand, two hundred forty-four".