3405140440 has 96 divisors (see below), whose sum is σ = 8564400000. Its totient is φ = 1216650240.

The previous prime is 3405140429. The next prime is 3405140441. The reversal of 3405140440 is 440415043.

It is a super-2 number, since 2×3405140440² = 23189962832246787200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405140441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201436 + ... + 217684.

It is an arithmetic number, because the mean of its divisors is an integer number (89212500).

Almost surely, 2^3405140440 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 3405140440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4282200000).

3405140440 is an abundant number, since it is smaller than the sum of its proper divisors (5159259560).

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

3405140440 is a wasteful number, since it uses less digits than its factorization.

3405140440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16317 (or 16300 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 3405140440 is about 58353.5812097253. The cubic root of 3405140440 is about 1504.4520236214.

Adding to 3405140440 its reverse (440415043), we get a palindrome (3845555483).

The spelling of 3405140440 in words is "three billion, four hundred five million, one hundred forty thousand, four hundred forty".