539985951 has 6 divisors (see below), whose sum is σ = 779979720. Its totient is φ = 359990628.

The previous prime is 539985923. The next prime is 539985989. The reversal of 539985951 is 159589935.

It is a happy number.

539985951 is a `hidden beast` number, since 539 + 9 + 8 + 59 + 51 = 666.

It is not a de Polignac number, because 539985951 - 2¹⁷ = 539854879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539985991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29999211 + ... + 29999228.

It is an arithmetic number, because the mean of its divisors is an integer number (129996620).

Almost surely, 2^539985951 is an apocalyptic number.

539985951 is a deficient number, since it is larger than the sum of its proper divisors (239993769).

539985951 is a wasteful number, since it uses less digits than its factorization.

539985951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59998445 (or 59998442 counting only the distinct ones).

The product of its digits is 2187000, while the sum is 54.

The square root of 539985951 is about 23237.5977889282. The cubic root of 539985951 is about 814.3182229074.

The spelling of 539985951 in words is "five hundred thirty-nine million, nine hundred eighty-five thousand, nine hundred fifty-one".