238723879 has 2 divisors, whose sum is σ = 238723880. Its totient is φ = 238723878.

The previous prime is 238723861. The next prime is 238723883. The reversal of 238723879 is 978327832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238723879 - 2¹¹ = 238721831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238723829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119361939 + 119361940.

It is an arithmetic number, because the mean of its divisors is an integer number (119361940).

Almost surely, 2^238723879 is an apocalyptic number.

238723879 is a deficient number, since it is larger than the sum of its proper divisors (1).

238723879 is an equidigital number, since it uses as much as digits as its factorization.

238723879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 49.

The square root of 238723879 is about 15450.6918615316. The cubic root of 238723879 is about 620.3430974749.

The spelling of 238723879 in words is "two hundred thirty-eight million, seven hundred twenty-three thousand, eight hundred seventy-nine".