238789657 has 8 divisors (see below), whose sum is σ = 254474496. Its totient is φ = 223546752.

The previous prime is 238789637. The next prime is 238789711. The reversal of 238789657 is 756987832.

238789657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-238789657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 238789598 and 238789607.

It is not an unprimeable number, because it can be changed into a prime (238789627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109368 + ... + 111529.

It is an arithmetic number, because the mean of its divisors is an integer number (31809312).

Almost surely, 2^238789657 is an apocalyptic number.

It is an amenable number.

238789657 is a deficient number, since it is larger than the sum of its proper divisors (15684839).

238789657 is a wasteful number, since it uses less digits than its factorization.

238789657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220967.

The product of its digits is 5080320, while the sum is 55.

The square root of 238789657 is about 15452.8203574623. The cubic root of 238789657 is about 620.4000687077.

The spelling of 238789657 in words is "two hundred thirty-eight million, seven hundred eighty-nine thousand, six hundred fifty-seven".