440405212 has 18 divisors (see below), whose sum is σ = 834556128. Its totient is φ = 203263632.

The previous prime is 440405209. The next prime is 440405227. The reversal of 440405212 is 212504044.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 325068 + ... + 326419.

Almost surely, 2^440405212 is an apocalyptic number.

It is an amenable number.

440405212 is a deficient number, since it is larger than the sum of its proper divisors (394150916).

440405212 is a wasteful number, since it uses less digits than its factorization.

440405212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651517 (or 651502 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 440405212 is about 20985.8336026949. The cubic root of 440405212 is about 760.8239056613.

Adding to 440405212 its reverse (212504044), we get a palindrome (652909256).

The spelling of 440405212 in words is "four hundred forty million, four hundred five thousand, two hundred twelve".