238974887 has 4 divisors (see below), whose sum is σ = 239260560. Its totient is φ = 238689216.

The previous prime is 238974851. The next prime is 238974889. The reversal of 238974887 is 788479832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 238974887 - 2²² = 234780583 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 (238974889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141578 + ... + 143255.

It is an arithmetic number, because the mean of its divisors is an integer number (59815140).

Almost surely, 2^238974887 is an apocalyptic number.

238974887 is a deficient number, since it is larger than the sum of its proper divisors (285673).

238974887 is an equidigital number, since it uses as much as digits as its factorization.

238974887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285672.

The product of its digits is 5419008, while the sum is 56.

The square root of 238974887 is about 15458.8125999379. The cubic root of 238974887 is about 620.5604427725.

The spelling of 238974887 in words is "two hundred thirty-eight million, nine hundred seventy-four thousand, eight hundred eighty-seven".