440128916 has 12 divisors (see below), whose sum is σ = 771243060. Its totient is φ = 219773760.

The previous prime is 440128883. The next prime is 440128921. The reversal of 440128916 is 619821044.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22090000 + 418038916 = 4700^2 + 20446^2 .

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, 69251 + ... + 75338.

It is an arithmetic number, because the mean of its divisors is an integer number (64270255).

Almost surely, 2^440128916 is an apocalyptic number.

It is an amenable number.

440128916 is a deficient number, since it is larger than the sum of its proper divisors (331114144).

440128916 is a wasteful number, since it uses less digits than its factorization.

440128916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145354 (or 145352 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 440128916 is about 20979.2496529309. The cubic root of 440128916 is about 760.6647669321.

The spelling of 440128916 in words is "four hundred forty million, one hundred twenty-eight thousand, nine hundred sixteen".