238969685 has 8 divisors (see below), whose sum is σ = 289720536. Its totient is φ = 189204480.

The previous prime is 238969673. The next prime is 238969727. The reversal of 238969685 is 586969832.

It can be written as a sum of positive squares in 4 ways, for example, as 26801329 + 212168356 = 5177^2 + 14566^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-238969685 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238969685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245876 + ... + 246845.

It is an arithmetic number, because the mean of its divisors is an integer number (36215067).

Almost surely, 2^238969685 is an apocalyptic number.

It is an amenable number.

238969685 is a deficient number, since it is larger than the sum of its proper divisors (50750851).

238969685 is an equidigital number, since it uses as much as digits as its factorization.

238969685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492823.

The product of its digits is 5598720, while the sum is 56.

The square root of 238969685 is about 15458.6443454787. The cubic root of 238969685 is about 620.5559399579. Note that the first 3 decimals are identical.

The spelling of 238969685 in words is "two hundred thirty-eight million, nine hundred sixty-nine thousand, six hundred eighty-five".