238956889 has 2 divisors, whose sum is σ = 238956890. Its totient is φ = 238956888.

The previous prime is 238956877. The next prime is 238956911. The reversal of 238956889 is 988659832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163840000 + 75116889 = 12800^2 + 8667^2 .

It is a cyclic number.

It is not a de Polignac number, because 238956889 - 2⁷ = 238956761 is a prime.

It is not a weakly prime, because it can be changed into another prime (238956829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119478444 + 119478445.

It is an arithmetic number, because the mean of its divisors is an integer number (119478445).

Almost surely, 2^238956889 is an apocalyptic number.

It is an amenable number.

238956889 is a deficient number, since it is larger than the sum of its proper divisors (1).

238956889 is an equidigital number, since it uses as much as digits as its factorization.

238956889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 58.

The square root of 238956889 is about 15458.2304614726. The cubic root of 238956889 is about 620.5448635522.

The spelling of 238956889 in words is "two hundred thirty-eight million, nine hundred fifty-six thousand, eight hundred eighty-nine".