239989123 has 32 divisors (see below), whose sum is σ = 279936000. Its totient is φ = 203723520.

The previous prime is 239989117. The next prime is 239989129. The reversal of 239989123 is 321989932.

It is an interprime number because it is at equal distance from previous prime (239989117) and next prime (239989129).

It is not a de Polignac number, because 239989123 - 2⁵ = 239989091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239989129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2242836 + ... + 2242942.

It is an arithmetic number, because the mean of its divisors is an integer number (8748000).

Almost surely, 2^239989123 is an apocalyptic number.

239989123 is a deficient number, since it is larger than the sum of its proper divisors (39946877).

239989123 is a wasteful number, since it uses less digits than its factorization.

239989123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315.

The product of its digits is 209952, while the sum is 46.

The square root of 239989123 is about 15491.5823271866. The cubic root of 239989123 is about 621.4371128912.

The spelling of 239989123 in words is "two hundred thirty-nine million, nine hundred eighty-nine thousand, one hundred twenty-three".