239179993 has 8 divisors (see below), whose sum is σ = 258532736. Its totient is φ = 219963600.

The previous prime is 239179957. The next prime is 239180033. The reversal of 239179993 is 399971932.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239179993 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 239179993.

It is not an unprimeable number, because it can be changed into a prime (239179933) 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 7 ways as a sum of consecutive naturals, for example, 30423 + ... + 37468.

It is an arithmetic number, because the mean of its divisors is an integer number (32316592).

Almost surely, 2^239179993 is an apocalyptic number.

It is an amenable number.

239179993 is a deficient number, since it is larger than the sum of its proper divisors (19352743).

239179993 is a wasteful number, since it uses less digits than its factorization.

239179993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68175.

The product of its digits is 826686, while the sum is 52.

The square root of 239179993 is about 15465.4451277679. The cubic root of 239179993 is about 620.7379290281.

The spelling of 239179993 in words is "two hundred thirty-nine million, one hundred seventy-nine thousand, nine hundred ninety-three".