239072539 has 4 divisors (see below), whose sum is σ = 239423256. Its totient is φ = 238721824.

The previous prime is 239072507. The next prime is 239072551. The reversal of 239072539 is 935270932.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 239072539 - 2⁵ = 239072507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239072569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174334 + ... + 175699.

It is an arithmetic number, because the mean of its divisors is an integer number (59855814).

Almost surely, 2^239072539 is an apocalyptic number.

239072539 is a deficient number, since it is larger than the sum of its proper divisors (350717).

239072539 is an equidigital number, since it uses as much as digits as its factorization.

239072539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350716.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 239072539 is about 15461.9707346767. The cubic root of 239072539 is about 620.6449575330.

The spelling of 239072539 in words is "two hundred thirty-nine million, seventy-two thousand, five hundred thirty-nine".