5439752640 has 420 divisors, whose sum is σ = 22514621976. Its totient is φ = 1243081728.

The previous prime is 5439752627. The next prime is 5439752663. The reversal of 5439752640 is 462579345.

5439752640 is a `hidden beast` number, since 54 + 39 + 7 + 526 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (420).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 59 ways as a sum of consecutive naturals, for example, 1267939 + ... + 1272221.

Almost surely, 2^5439752640 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 5439752640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11257310988).

5439752640 is an abundant number, since it is smaller than the sum of its proper divisors (17074869336).

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

5439752640 is a wasteful number, since it uses less digits than its factorization.

5439752640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4326 (or 4300 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The square root of 5439752640 is about 73754.6787668416. The cubic root of 5439752640 is about 1758.7052116017.

The spelling of 5439752640 in words is "five billion, four hundred thirty-nine million, seven hundred fifty-two thousand, six hundred forty".