238966605 has 20 divisors (see below), whose sum is σ = 428370492. Its totient is φ = 127448640.

The previous prime is 238966601. The next prime is 238966613. The reversal of 238966605 is 506669832.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 92217609 + 146748996 = 9603^2 + 12114^2 .

It is not a de Polignac number, because 238966605 - 2² = 238966601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238966601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 294616 + ... + 295425.

Almost surely, 2^238966605 is an apocalyptic number.

It is an amenable number.

238966605 is a deficient number, since it is larger than the sum of its proper divisors (189403887).

238966605 is an equidigital number, since it uses as much as digits as its factorization.

238966605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590058 (or 590049 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 238966605 is about 15458.5447245205. The cubic root of 238966605 is about 620.5532739007.

The spelling of 238966605 in words is "two hundred thirty-eight million, nine hundred sixty-six thousand, six hundred five".