238866449 has 2 divisors, whose sum is σ = 238866450. Its totient is φ = 238866448.

The previous prime is 238866421. The next prime is 238866469. The reversal of 238866449 is 944668832.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159567424 + 79299025 = 12632^2 + 8905^2 .

It is a cyclic number.

It is not a de Polignac number, because 238866449 - 2⁸ = 238866193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238866397 and 238866406.

It is not a weakly prime, because it can be changed into another prime (238866469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119433224 + 119433225.

It is an arithmetic number, because the mean of its divisors is an integer number (119433225).

Almost surely, 2^238866449 is an apocalyptic number.

It is an amenable number.

238866449 is a deficient number, since it is larger than the sum of its proper divisors (1).

238866449 is an equidigital number, since it uses as much as digits as its factorization.

238866449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1990656, while the sum is 50.

The square root of 238866449 is about 15455.3048821432. The cubic root of 238866449 is about 620.4665660825.

The spelling of 238866449 in words is "two hundred thirty-eight million, eight hundred sixty-six thousand, four hundred forty-nine".