238768993 has 2 divisors, whose sum is σ = 238768994. Its totient is φ = 238768992.

The previous prime is 238768987. The next prime is 238768997. The reversal of 238768993 is 399867832.

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., 198725409 + 40043584 = 14097^2 + 6328^2 .

It is a cyclic number.

It is not a de Polignac number, because 238768993 - 2¹⁷ = 238637921 is a prime.

It is not a weakly prime, because it can be changed into another prime (238768997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119384496 + 119384497.

It is an arithmetic number, because the mean of its divisors is an integer number (119384497).

Almost surely, 2^238768993 is an apocalyptic number.

It is an amenable number.

238768993 is a deficient number, since it is larger than the sum of its proper divisors (1).

238768993 is an equidigital number, since it uses as much as digits as its factorization.

238768993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 55.

The square root of 238768993 is about 15452.1517271867. The cubic root of 238768993 is about 620.3821724596.

The spelling of 238768993 in words is "two hundred thirty-eight million, seven hundred sixty-eight thousand, nine hundred ninety-three".