239708081 has 4 divisors (see below), whose sum is σ = 240004464. Its totient is φ = 239411700.

The previous prime is 239708069. The next prime is 239708087. The reversal of 239708081 is 180807932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 239708081 - 2¹⁰ = 239707057 is a prime.

It is a super-2 number, since 2×239708081² = 114919928193405122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239708087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146975 + ... + 148596.

It is an arithmetic number, because the mean of its divisors is an integer number (60001116).

Almost surely, 2^239708081 is an apocalyptic number.

It is an amenable number.

239708081 is a deficient number, since it is larger than the sum of its proper divisors (296383).

239708081 is an equidigital number, since it uses as much as digits as its factorization.

239708081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296382.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 239708081 is about 15482.5088729185. The cubic root of 239708081 is about 621.1944377975.

The spelling of 239708081 in words is "two hundred thirty-nine million, seven hundred eight thousand, eighty-one".