440015412 has 12 divisors (see below), whose sum is σ = 1026702656. Its totient is φ = 146671800.

The previous prime is 440015399. The next prime is 440015413. The reversal of 440015412 is 214510044.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×440015412² = 387227125595059488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440015413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18333964 + ... + 18333987.

Almost surely, 2^440015412 is an apocalyptic number.

It is an amenable number.

440015412 is an abundant number, since it is smaller than the sum of its proper divisors (586687244).

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

440015412 is a wasteful number, since it uses less digits than its factorization.

440015412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36667958 (or 36667956 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 440015412 is about 20976.5443293217. The cubic root of 440015412 is about 760.5993725188.

Adding to 440015412 its reverse (214510044), we get a palindrome (654525456).

The spelling of 440015412 in words is "four hundred forty million, fifteen thousand, four hundred twelve".