238208961 has 4 divisors (see below), whose sum is σ = 317611952. Its totient is φ = 158805972.

The previous prime is 238208951. The next prime is 238208969. The reversal of 238208961 is 169802832.

It is a happy number.

238208961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 238208961 - 2⁹ = 238208449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (238208969) 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, 39701491 + ... + 39701496.

It is an arithmetic number, because the mean of its divisors is an integer number (79402988).

Almost surely, 2^238208961 is an apocalyptic number.

It is an amenable number.

238208961 is a deficient number, since it is larger than the sum of its proper divisors (79402991).

238208961 is an equidigital number, since it uses as much as digits as its factorization.

238208961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79402990.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 238208961 is about 15434.0195995729. The cubic root of 238208961 is about 619.8967578698.

The spelling of 238208961 in words is "two hundred thirty-eight million, two hundred eight thousand, nine hundred sixty-one".