539906691 has 8 divisors (see below), whose sum is σ = 724643584. Its totient is φ = 357553800.

The previous prime is 539906687. The next prime is 539906713. The reversal of 539906691 is 196609935.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 539906691 - 2² = 539906687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 539906691.

It is not an unprimeable number, because it can be changed into a prime (539906611) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 595471 + ... + 596376.

It is an arithmetic number, because the mean of its divisors is an integer number (90580448).

Almost surely, 2^539906691 is an apocalyptic number.

539906691 is a deficient number, since it is larger than the sum of its proper divisors (184736893).

539906691 is a wasteful number, since it uses less digits than its factorization.

539906691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192001.

The product of its (nonzero) digits is 393660, while the sum is 48.

The square root of 539906691 is about 23235.8923004906. The cubic root of 539906691 is about 814.2783786482.

The spelling of 539906691 in words is "five hundred thirty-nine million, nine hundred six thousand, six hundred ninety-one".