539673840 has 480 divisors, whose sum is σ = 2105865216. Its totient is φ = 127733760.

The previous prime is 539673821. The next prime is 539673899. The reversal of 539673840 is 48376935.

539673840 is a `hidden beast` number, since 539 + 6 + 73 + 8 + 40 = 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 95 ways as a sum of consecutive naturals, for example, 7601005 + ... + 7601075.

Almost surely, 2^539673840 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 539673840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1052932608).

539673840 is an abundant number, since it is smaller than the sum of its proper divisors (1566191376).

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

539673840 is a wasteful number, since it uses less digits than its factorization.

539673840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 539673840 is about 23230.8811714063. The cubic root of 539673840 is about 814.1613011346.

The spelling of 539673840 in words is "five hundred thirty-nine million, six hundred seventy-three thousand, eight hundred forty".