440041212 has 36 divisors (see below), whose sum is σ = 1197891240. Its totient is φ = 135397152.

The previous prime is 440041211. The next prime is 440041247. The reversal of 440041212 is 212140044.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440041211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469662 + ... + 470597.

Almost surely, 2^440041212 is an apocalyptic number.

It is an amenable number.

440041212 is an abundant number, since it is smaller than the sum of its proper divisors (757850028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

440041212 is a wasteful number, since it uses less digits than its factorization.

440041212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940282 (or 940277 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 440041212 is about 20977.1592929071. The cubic root of 440041212 is about 760.6142379680.

Adding to 440041212 its reverse (212140044), we get a palindrome (652181256).

The spelling of 440041212 in words is "four hundred forty million, forty-one thousand, two hundred twelve".