4389481840 has 40 divisors (see below), whose sum is σ = 10742682960. Its totient is φ = 1663382016.

The previous prime is 4389481829. The next prime is 4389481841. The reversal of 4389481840 is 481849834.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4389481841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1442389 + ... + 1445428.

It is an arithmetic number, because the mean of its divisors is an integer number (268567074).

Almost surely, 2^4389481840 is an apocalyptic number.

4389481840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4389481840 is an abundant number, since it is smaller than the sum of its proper divisors (6353201120).

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

4389481840 is a wasteful number, since it uses less digits than its factorization.

4389481840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887849 (or 2887843 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The square root of 4389481840 is about 66253.1647545987. The cubic root of 4389481840 is about 1637.3357793474.

The spelling of 4389481840 in words is "four billion, three hundred eighty-nine million, four hundred eighty-one thousand, eight hundred forty".