238779 has 12 divisors (see below), whose sum is σ = 353496. Its totient is φ = 155232.

The previous prime is 238759. The next prime is 238781. The reversal of 238779 is 977832.

238779 = 42³ + 43³ + 44³.

238779 is nontrivially palindromic in base 7.

It is not a de Polignac number, because 238779 - 2⁵ = 238747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79 + ... + 695.

It is an arithmetic number, because the mean of its divisors is an integer number (29458).

2²³⁸⁷⁷⁹ is an apocalyptic number.

238779 is a deficient number, since it is larger than the sum of its proper divisors (114717).

238779 is a wasteful number, since it uses less digits than its factorization.

238779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666 (or 663 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 238779 is about 488.6501816228. The cubic root of 238779 is about 62.0390839243.

It can be divided in two parts, 2 and 38779, that added together give a triangular number (38781 = T₂₇₈).

The spelling of 238779 in words is "two hundred thirty-eight thousand, seven hundred seventy-nine".