4381280440 has 16 divisors (see below), whose sum is σ = 9857881080. Its totient is φ = 1752512160.

The previous prime is 4381280429. The next prime is 4381280447. The reversal of 4381280440 is 440821834.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4381280396 and 4381280405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4381280447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54765966 + ... + 54766045.

Almost surely, 2^4381280440 is an apocalyptic number.

4381280440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4381280440 is an abundant number, since it is smaller than the sum of its proper divisors (5476600640).

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

4381280440 is a wasteful number, since it uses less digits than its factorization.

4381280440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109532022 (or 109532018 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 4381280440 is about 66191.2414145557. The cubic root of 4381280440 is about 1636.3153994049.

The spelling of 4381280440 in words is "four billion, three hundred eighty-one million, two hundred eighty thousand, four hundred forty".