400003244 has 12 divisors (see below), whose sum is σ = 711870600. Its totient is φ = 196611648.

The previous prime is 400003223. The next prime is 400003259. The reversal of 400003244 is 442300004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847229 + ... + 847700.

It is an arithmetic number, because the mean of its divisors is an integer number (59322550).

Almost surely, 2^400003244 is an apocalyptic number.

It is an amenable number.

400003244 is a deficient number, since it is larger than the sum of its proper divisors (311867356).

400003244 is a wasteful number, since it uses less digits than its factorization.

400003244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694992 (or 1694990 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 400003244 is about 20000.0810998356. The cubic root of 400003244 is about 736.8082915557.

Adding to 400003244 its reverse (442300004), we get a palindrome (842303248).

The spelling of 400003244 in words is "four hundred million, three thousand, two hundred forty-four".