238979123 has 2 divisors, whose sum is σ = 238979124. Its totient is φ = 238979122.

The previous prime is 238979107. The next prime is 238979129. The reversal of 238979123 is 321979832.

It is a happy number.

238979123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238979123 - 2⁴ = 238979107 is a prime.

It is a super-2 number, since 2×238979123² = 114222042459698258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (238979129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119489561 + 119489562.

It is an arithmetic number, because the mean of its divisors is an integer number (119489562).

Almost surely, 2^238979123 is an apocalyptic number.

238979123 is a deficient number, since it is larger than the sum of its proper divisors (1).

238979123 is an equidigital number, since it uses as much as digits as its factorization.

238979123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 238979123 is about 15458.9496085601. The cubic root of 238979123 is about 620.5641093760.

The spelling of 238979123 in words is "two hundred thirty-eight million, nine hundred seventy-nine thousand, one hundred twenty-three".