239128863 has 8 divisors (see below), whose sum is σ = 319042608. Its totient is φ = 159317184.

The previous prime is 239128859. The next prime is 239128871. The reversal of 239128863 is 368821932.

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

It is not a de Polignac number, because 239128863 - 2² = 239128859 is a prime.

It is a super-2 number, since 2×239128863² = 114365226239345538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239128853) 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, 19870 + ... + 29547.

It is an arithmetic number, because the mean of its divisors is an integer number (39880326).

Almost surely, 2^239128863 is an apocalyptic number.

239128863 is a deficient number, since it is larger than the sum of its proper divisors (79913745).

239128863 is a wasteful number, since it uses less digits than its factorization.

239128863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51033.

The product of its digits is 124416, while the sum is 42.

The square root of 239128863 is about 15463.7919993771. The cubic root of 239128863 is about 620.6936937337.

The spelling of 239128863 in words is "two hundred thirty-nine million, one hundred twenty-eight thousand, eight hundred sixty-three".