440781912 has 80 divisors (see below), whose sum is σ = 1299612600. Its totient is φ = 139190400.

The previous prime is 440781907. The next prime is 440781917. The reversal of 440781912 is 219187044.

It is an interprime number because it is at equal distance from previous prime (440781907) and next prime (440781917).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440781917) 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 19 ways as a sum of consecutive naturals, for example, 5589 + ... + 30212.

Almost surely, 2^440781912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440781912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (649806300).

440781912 is an abundant number, since it is smaller than the sum of its proper divisors (858830688).

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

440781912 is a wasteful number, since it uses less digits than its factorization.

440781912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35838 (or 35825 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 440781912 is about 20994.8067864413. The cubic root of 440781912 is about 761.0407670738.

The spelling of 440781912 in words is "four hundred forty million, seven hundred eighty-one thousand, nine hundred twelve".