440670340 has 96 divisors (see below), whose sum is σ = 1068754176. Its totient is φ = 151050240.

The previous prime is 440670319. The next prime is 440670343. The reversal of 440670340 is 43076044.

440670340 = T₁₉₁ + T₁₉₂ + ... + T₁₃₈₃.

It is a junction number, because it is equal to n+sod(n) for n = 440670299 and 440670308.

It is not an unprimeable number, because it can be changed into a prime (440670343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368784 + ... + 369976.

It is an arithmetic number, because the mean of its divisors is an integer number (11132856).

Almost surely, 2^440670340 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 440670340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (534377088).

440670340 is an abundant number, since it is smaller than the sum of its proper divisors (628083836).

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

440670340 is a wasteful number, since it uses less digits than its factorization.

440670340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 440670340 is about 20992.1494849860. The cubic root of 440670340 is about 760.9765493708.

The spelling of 440670340 in words is "four hundred forty million, six hundred seventy thousand, three hundred forty".