400032244 has 12 divisors (see below), whose sum is σ = 717131268. Its totient is φ = 195137600.

The previous prime is 400032239. The next prime is 400032323. The reversal of 400032244 is 442230004.

It can be written as a sum of positive squares in 2 ways, for example, as 231344100 + 168688144 = 15210^2 + 12988^2 .

It is a congruent number.

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, 1219447 + ... + 1219774.

It is an arithmetic number, because the mean of its divisors is an integer number (59760939).

Almost surely, 2^400032244 is an apocalyptic number.

It is an amenable number.

400032244 is a deficient number, since it is larger than the sum of its proper divisors (317099024).

400032244 is a wasteful number, since it uses less digits than its factorization.

400032244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2439266 (or 2439264 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 400032244 is about 20000.8060837557. The cubic root of 400032244 is about 736.8260971814.

Adding to 400032244 its reverse (442230004), we get a palindrome (842262248).

The spelling of 400032244 in words is "four hundred million, thirty-two thousand, two hundred forty-four".