239978005 has 8 divisors (see below), whose sum is σ = 294100992. Its totient is φ = 187897488.

The previous prime is 239978003. The next prime is 239978009. The reversal of 239978005 is 500879932.

It is a happy number.

239978005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 239978005 - 2¹ = 239978003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239978003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510357 + ... + 510826.

It is an arithmetic number, because the mean of its divisors is an integer number (36762624).

Almost surely, 2^239978005 is an apocalyptic number.

It is an amenable number.

239978005 is a deficient number, since it is larger than the sum of its proper divisors (54122987).

239978005 is a wasteful number, since it uses less digits than its factorization.

239978005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021235.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 239978005 is about 15491.2234829919. The cubic root of 239978005 is about 621.4275162833.

The spelling of 239978005 in words is "two hundred thirty-nine million, nine hundred seventy-eight thousand, five".