238555961 has 12 divisors (see below), whose sum is σ = 277758720. Its totient is φ = 204288840.

The previous prime is 238555937. The next prime is 238555987. The reversal of 238555961 is 169555832.

It is not a de Polignac number, because 238555961 - 2¹⁴ = 238539577 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 (238555921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90776 + ... + 93366.

It is an arithmetic number, because the mean of its divisors is an integer number (23146560).

Almost surely, 2^238555961 is an apocalyptic number.

It is an amenable number.

238555961 is a deficient number, since it is larger than the sum of its proper divisors (39202759).

238555961 is a wasteful number, since it uses less digits than its factorization.

238555961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484 (or 4477 counting only the distinct ones).

The product of its digits is 324000, while the sum is 44.

The square root of 238555961 is about 15445.2569094852. The cubic root of 238555961 is about 620.1976139065.

The spelling of 238555961 in words is "two hundred thirty-eight million, five hundred fifty-five thousand, nine hundred sixty-one".