238255979 has 4 divisors (see below), whose sum is σ = 256583376. Its totient is φ = 219928584.

The previous prime is 238255973. The next prime is 238255999. The reversal of 238255979 is 979552832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238255979 is a prime.

It is a super-3 number, since 3×238255979³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238255973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9163679 + ... + 9163704.

It is an arithmetic number, because the mean of its divisors is an integer number (64145844).

Almost surely, 2^238255979 is an apocalyptic number.

238255979 is a deficient number, since it is larger than the sum of its proper divisors (18327397).

238255979 is a wasteful number, since it uses less digits than its factorization.

238255979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18327396.

The product of its digits is 1360800, while the sum is 50.

The square root of 238255979 is about 15435.5427180258. The cubic root of 238255979 is about 619.9375405342.

The spelling of 238255979 in words is "two hundred thirty-eight million, two hundred fifty-five thousand, nine hundred seventy-nine".