238428049 has 2 divisors, whose sum is σ = 238428050. Its totient is φ = 238428048.

The previous prime is 238428031. The next prime is 238428059. The reversal of 238428049 is 940824832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162180225 + 76247824 = 12735^2 + 8732^2 .

It is a cyclic number.

It is not a de Polignac number, because 238428049 - 2¹⁹ = 237903761 is a prime.

It is not a weakly prime, because it can be changed into another prime (238428019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119214024 + 119214025.

It is an arithmetic number, because the mean of its divisors is an integer number (119214025).

Almost surely, 2^238428049 is an apocalyptic number.

It is an amenable number.

238428049 is a deficient number, since it is larger than the sum of its proper divisors (1).

238428049 is an equidigital number, since it uses as much as digits as its factorization.

238428049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 238428049 is about 15441.1155361263. The cubic root of 238428049 is about 620.0867455803.

The spelling of 238428049 in words is "two hundred thirty-eight million, four hundred twenty-eight thousand, forty-nine".