238979833 has 2 divisors, whose sum is σ = 238979834. Its totient is φ = 238979832.

The previous prime is 238979831. The next prime is 238979849. The reversal of 238979833 is 338979832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150111504 + 88868329 = 12252^2 + 9427^2 .

It is a cyclic number.

It is not a de Polignac number, because 238979833 - 2¹ = 238979831 is a prime.

It is a super-2 number, since 2×238979833² = 114222721161415778, which contains 22 as substring.

Together with 238979831, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (238979831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119489916 + 119489917.

It is an arithmetic number, because the mean of its divisors is an integer number (119489917).

Almost surely, 2^238979833 is an apocalyptic number.

It is an amenable number.

238979833 is a deficient number, since it is larger than the sum of its proper divisors (1).

238979833 is an equidigital number, since it uses as much as digits as its factorization.

238979833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 52.

The square root of 238979833 is about 15458.9725725871. The cubic root of 238979833 is about 620.5647239347.

Subtracting 238979833 from its reverse (338979832), we obtain a palindrome (99999999).

The spelling of 238979833 in words is "two hundred thirty-eight million, nine hundred seventy-nine thousand, eight hundred thirty-three".