3405423440 has 20 divisors (see below), whose sum is σ = 7917609684. Its totient is φ = 1362169344.

The previous prime is 3405423407. The next prime is 3405423457. The reversal of 3405423440 is 443245043.

3405423440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2491207744 + 914215696 = 49912^2 + 30236^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 21283817 + ... + 21283976.

Almost surely, 2^3405423440 is an apocalyptic number.

It is an amenable number.

3405423440 is an abundant number, since it is smaller than the sum of its proper divisors (4512186244).

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

3405423440 is a wasteful number, since it uses less digits than its factorization.

3405423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42567806 (or 42567800 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 29.

The square root of 3405423440 is about 58356.0060319416. The cubic root of 3405423440 is about 1504.4937006227.

Adding to 3405423440 its reverse (443245043), we get a palindrome (3848668483).

The spelling of 3405423440 in words is "three billion, four hundred five million, four hundred twenty-three thousand, four hundred forty".