239230861 has 4 divisors (see below), whose sum is σ = 240184224. Its totient is φ = 238277500.

The previous prime is 239230847. The next prime is 239230867. The reversal of 239230861 is 168032932.

It is a happy number.

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 239230861 - 2⁵ = 239230829 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 (239230867) 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, 476305 + ... + 476806.

It is an arithmetic number, because the mean of its divisors is an integer number (60046056).

Almost surely, 2^239230861 is an apocalyptic number.

It is an amenable number.

239230861 is a deficient number, since it is larger than the sum of its proper divisors (953363).

239230861 is an equidigital number, since it uses as much as digits as its factorization.

239230861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953362.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 239230861 is about 15467.0896098781. The cubic root of 239230861 is about 620.7819313968.

The spelling of 239230861 in words is "two hundred thirty-nine million, two hundred thirty thousand, eight hundred sixty-one".