5439780864 has 432 divisors, whose sum is σ = 19298752200. Its totient is φ = 1467777024.

The previous prime is 5439780817. The next prime is 5439780901. The reversal of 5439780864 is 4680879345.

5439780864 is a `hidden beast` number, since 543 + 97 + 8 + 0 + 8 + 6 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 5439780864.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 17160034 + ... + 17160350.

Almost surely, 2^5439780864 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 5439780864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9649376100).

5439780864 is an abundant number, since it is smaller than the sum of its proper divisors (13858971336).

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

5439780864 is a wasteful number, since it uses less digits than its factorization.

5439780864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The square root of 5439780864 is about 73754.8701036074. The cubic root of 5439780864 is about 1758.7082532602.

The spelling of 5439780864 in words is "five billion, four hundred thirty-nine million, seven hundred eighty thousand, eight hundred sixty-four".