238297391 has 8 divisors (see below), whose sum is σ = 239829744. Its totient is φ = 236770560.

The previous prime is 238297363. The next prime is 238297393. The reversal of 238297391 is 193792832.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 238297391 - 2¹⁰ = 238296367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238297393) 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 7 ways as a sum of consecutive naturals, for example, 113471 + ... + 115551.

It is an arithmetic number, because the mean of its divisors is an integer number (29978718).

Almost surely, 2^238297391 is an apocalyptic number.

238297391 is a deficient number, since it is larger than the sum of its proper divisors (1532353).

238297391 is a wasteful number, since it uses less digits than its factorization.

238297391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761.

The product of its digits is 163296, while the sum is 44.

The square root of 238297391 is about 15436.8841091718. The cubic root of 238297391 is about 619.9734561997.

The spelling of 238297391 in words is "two hundred thirty-eight million, two hundred ninety-seven thousand, three hundred ninety-one".