4156440440 has 32 divisors (see below), whose sum is σ = 9388403280. Its totient is φ = 1656102912.

The previous prime is 4156440433. The next prime is 4156440461. The reversal of 4156440440 is 440446514.

It is a junction number, because it is equal to n+sod(n) for n = 4156440397 and 4156440406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191882 + ... + 212441.

Almost surely, 2^4156440440 is an apocalyptic number.

4156440440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4156440440 is an abundant number, since it is smaller than the sum of its proper divisors (5231962840).

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

4156440440 is a wasteful number, since it uses less digits than its factorization.

4156440440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404591 (or 404587 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 4156440440 is about 64470.4617635084. The cubic root of 4156440440 is about 1607.8314541211.

Adding to 4156440440 its reverse (440446514), we get a palindrome (4596886954).

The spelling of 4156440440 in words is "four billion, one hundred fifty-six million, four hundred forty thousand, four hundred forty".