440648670 has 256 divisors, whose sum is σ = 1430784000. Its totient is φ = 85800960.

The previous prime is 440648647. The next prime is 440648671. The reversal of 440648670 is 76846044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440648671) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1924116 + ... + 1924344.

It is an arithmetic number, because the mean of its divisors is an integer number (5589000).

Almost surely, 2^440648670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440648670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (715392000).

440648670 is an abundant number, since it is smaller than the sum of its proper divisors (990135330).

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

440648670 is a wasteful number, since it uses less digits than its factorization.

440648670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 440648670 is about 20991.6333333069. The cubic root of 440648670 is about 760.9640754717.

The spelling of 440648670 in words is "four hundred forty million, six hundred forty-eight thousand, six hundred seventy".