238702489 has 2 divisors, whose sum is σ = 238702490. Its totient is φ = 238702488.

The previous prime is 238702463. The next prime is 238702517. The reversal of 238702489 is 984207832.

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., 123032464 + 115670025 = 11092^2 + 10755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238702489 is a prime.

It is not a weakly prime, because it can be changed into another prime (238702889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119351244 + 119351245.

It is an arithmetic number, because the mean of its divisors is an integer number (119351245).

Almost surely, 2^238702489 is an apocalyptic number.

It is an amenable number.

238702489 is a deficient number, since it is larger than the sum of its proper divisors (1).

238702489 is an equidigital number, since it uses as much as digits as its factorization.

238702489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 238702489 is about 15449.9996440129. Note that the first 3 decimals coincide. The cubic root of 238702489 is about 620.3245690461.

The spelling of 238702489 in words is "two hundred thirty-eight million, seven hundred two thousand, four hundred eighty-nine".