5239491840 has 432 divisors, whose sum is σ = 19973640960. Its totient is φ = 1257553920.

The previous prime is 5239491827. The next prime is 5239491863. The reversal of 5239491840 is 481949325.

5239491840 is a `hidden beast` number, since 52 + 39 + 491 + 84 + 0 = 666.

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 47 ways as a sum of consecutive naturals, for example, 21922441 + ... + 21922679.

It is an arithmetic number, because the mean of its divisors is an integer number (46235280).

Almost surely, 2^5239491840 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 5239491840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9986820480).

5239491840 is an abundant number, since it is smaller than the sum of its proper divisors (14734149120).

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

5239491840 is a wasteful number, since it uses less digits than its factorization.

5239491840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 5239491840 is about 72384.3342167350. The cubic root of 5239491840 is about 1736.8529719256.

The spelling of 5239491840 in words is "five billion, two hundred thirty-nine million, four hundred ninety-one thousand, eight hundred forty".