239328091 has 16 divisors (see below), whose sum is σ = 265206528. Its totient is φ = 214963200.

The previous prime is 239328083. The next prime is 239328107. The reversal of 239328091 is 190823932.

It is a cyclic number.

It is not a de Polignac number, because 239328091 - 2³ = 239328083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 239328091.

It is not an unprimeable number, because it can be changed into a prime (239328491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35361 + ... + 41581.

It is an arithmetic number, because the mean of its divisors is an integer number (16575408).

Almost surely, 2^239328091 is an apocalyptic number.

239328091 is a deficient number, since it is larger than the sum of its proper divisors (25878437).

239328091 is a wasteful number, since it uses less digits than its factorization.

239328091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6342.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 239328091 is about 15470.2324158366. The cubic root of 239328091 is about 620.8660209546.

It can be divided in two parts, 23932 and 8091, that added together give a palindrome (32023).

The spelling of 239328091 in words is "two hundred thirty-nine million, three hundred twenty-eight thousand, ninety-one".