3440645244 has 72 divisors (see below), whose sum is σ = 9011686320. Its totient is φ = 1105961472.

The previous prime is 3440645213. The next prime is 3440645287. The reversal of 3440645244 is 4425460443.

3440645244 is a `hidden beast` number, since 3 + 4 + 4 + 0 + 645 + 2 + 4 + 4 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 3440645199 and 3440645208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139087 + ... + 161945.

It is an arithmetic number, because the mean of its divisors is an integer number (125162310).

Almost surely, 2^3440645244 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 3440645244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4505843160).

3440645244 is an abundant number, since it is smaller than the sum of its proper divisors (5571041076).

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

3440645244 is a wasteful number, since it uses less digits than its factorization.

3440645244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23019 (or 23014 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

The square root of 3440645244 is about 58657.0135959887. The cubic root of 3440645244 is about 1509.6628406772.

The spelling of 3440645244 in words is "three billion, four hundred forty million, six hundred forty-five thousand, two hundred forty-four".