239874381 has 12 divisors (see below), whose sum is σ = 347001408. Its totient is φ = 159678024.

The previous prime is 239874359. The next prime is 239874391. The reversal of 239874381 is 183478932.

It is not a de Polignac number, because 239874381 - 2¹¹ = 239872333 is a prime.

It is a super-2 number, since 2×239874381² = 115079437320266322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239874391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13365 + ... + 25658.

It is an arithmetic number, because the mean of its divisors is an integer number (28916784).

Almost surely, 2^239874381 is an apocalyptic number.

It is an amenable number.

239874381 is a deficient number, since it is larger than the sum of its proper divisors (107127027).

239874381 is a wasteful number, since it uses less digits than its factorization.

239874381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39712 (or 39709 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 239874381 is about 15487.8785183769. The cubic root of 239874381 is about 621.3380579795.

The spelling of 239874381 in words is "two hundred thirty-nine million, eight hundred seventy-four thousand, three hundred eighty-one".