400244212 has 12 divisors (see below), whose sum is σ = 703748416. Its totient is φ = 199173240.

The previous prime is 400244203. The next prime is 400244219. The reversal of 400244212 is 212442004.

It is a self number, because there is not a number n which added to its sum of digits gives 400244212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400244219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236268 + ... + 237955.

Almost surely, 2^400244212 is an apocalyptic number.

It is an amenable number.

400244212 is a deficient number, since it is larger than the sum of its proper divisors (303504204).

400244212 is a wasteful number, since it uses less digits than its factorization.

400244212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474438 (or 474436 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 400244212 is about 20006.1043684172. The cubic root of 400244212 is about 736.9562166727.

Adding to 400244212 its reverse (212442004), we get a palindrome (612686216).

The spelling of 400244212 in words is "four hundred million, two hundred forty-four thousand, two hundred twelve".