3440326640 has 40 divisors (see below), whose sum is σ = 8077974048. Its totient is φ = 1362502400.

The previous prime is 3440326627. The next prime is 3440326651. The reversal of 3440326640 is 466230443.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 3440326597 and 3440326606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204812 + ... + 220971.

Almost surely, 2^3440326640 is an apocalyptic number.

It is an amenable number.

3440326640 is an abundant number, since it is smaller than the sum of its proper divisors (4637647408).

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

3440326640 is a wasteful number, since it uses less digits than its factorization.

3440326640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425897 (or 425891 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

The square root of 3440326640 is about 58654.2977112505. The cubic root of 3440326640 is about 1509.6162409425.

The spelling of 3440326640 in words is "three billion, four hundred forty million, three hundred twenty-six thousand, six hundred forty".