238378779 has 6 divisors (see below), whose sum is σ = 344324916. Its totient is φ = 158919180.

The previous prime is 238378759. The next prime is 238378793. The reversal of 238378779 is 977873832.

It is not a de Polignac number, because 238378779 - 2²¹ = 236281627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238378759) 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 in 5 ways as a sum of consecutive naturals, for example, 13243257 + ... + 13243274.

It is an arithmetic number, because the mean of its divisors is an integer number (57387486).

Almost surely, 2^238378779 is an apocalyptic number.

238378779 is a deficient number, since it is larger than the sum of its proper divisors (105946137).

238378779 is a wasteful number, since it uses less digits than its factorization.

238378779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26486537 (or 26486534 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 238378779 is about 15439.5200378768. The cubic root of 238378779 is about 620.0440299983.

The spelling of 238378779 in words is "two hundred thirty-eight million, three hundred seventy-eight thousand, seven hundred seventy-nine".