232638389 has 2 divisors, whose sum is σ = 232638390. Its totient is φ = 232638388.

The previous prime is 232638383. The next prime is 232638397. The reversal of 232638389 is 983836232.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149646289 + 82992100 = 12233^2 + 9110^2 .

It is a cyclic number.

It is not a de Polignac number, because 232638389 - 2¹² = 232634293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232638383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116319194 + 116319195.

It is an arithmetic number, because the mean of its divisors is an integer number (116319195).

Almost surely, 2^232638389 is an apocalyptic number.

It is an amenable number.

232638389 is a deficient number, since it is larger than the sum of its proper divisors (1).

232638389 is an equidigital number, since it uses as much as digits as its factorization.

232638389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 44.

The square root of 232638389 is about 15252.4879609853. The cubic root of 232638389 is about 615.0264504895.

The spelling of 232638389 in words is "two hundred thirty-two million, six hundred thirty-eight thousand, three hundred eighty-nine".