5439843940 has 48 divisors (see below), whose sum is σ = 12114032112. Its totient is φ = 2044829696.

The previous prime is 5439843917. The next prime is 5439843953. The reversal of 5439843940 is 493489345.

It can be written as a sum of positive squares in 8 ways, for example, as 2116552036 + 3323291904 = 46006^2 + 57648^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218364 + ... + 241996.

It is an arithmetic number, because the mean of its divisors is an integer number (252375669).

Almost surely, 2^5439843940 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 5439843940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6057016056).

5439843940 is an abundant number, since it is smaller than the sum of its proper divisors (6674188172).

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

5439843940 is a wasteful number, since it uses less digits than its factorization.

5439843940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24336 (or 24334 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The square root of 5439843940 is about 73755.2977080291. The cubic root of 5439843940 is about 1758.7150508290.

The spelling of 5439843940 in words is "five billion, four hundred thirty-nine million, eight hundred forty-three thousand, nine hundred forty".