539939945 has 16 divisors (see below), whose sum is σ = 654485952. Its totient is φ = 427602240.

The previous prime is 539939909. The next prime is 539939969. The reversal of 539939945 is 549939935.

It is a de Polignac number, because none of the positive numbers 2^k-539939945 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 229475 + ... + 231815.

It is an arithmetic number, because the mean of its divisors is an integer number (40905372).

Almost surely, 2^539939945 is an apocalyptic number.

It is an amenable number.

539939945 is a deficient number, since it is larger than the sum of its proper divisors (114546007).

539939945 is a wasteful number, since it uses less digits than its factorization.

539939945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792.

The product of its digits is 5904900, while the sum is 56.

The square root of 539939945 is about 23236.6078634555. The cubic root of 539939945 is about 814.2950960167.

The spelling of 539939945 in words is "five hundred thirty-nine million, nine hundred thirty-nine thousand, nine hundred forty-five".