238969687 has 4 divisors (see below), whose sum is σ = 260694216. Its totient is φ = 217245160.

The previous prime is 238969673. The next prime is 238969727. The reversal of 238969687 is 786969832.

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

It is not a de Polignac number, because 238969687 - 2⁷ = 238969559 is a prime.

It is a super-2 number, since 2×238969687² = 114213022609755938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238969387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10862248 + ... + 10862269.

It is an arithmetic number, because the mean of its divisors is an integer number (65173554).

Almost surely, 2^238969687 is an apocalyptic number.

238969687 is a deficient number, since it is larger than the sum of its proper divisors (21724529).

238969687 is a wasteful number, since it uses less digits than its factorization.

238969687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21724528.

The product of its digits is 7838208, while the sum is 58.

The square root of 238969687 is about 15458.6444101674. The cubic root of 238969687 is about 620.5559416891. Note that the first 3 decimals are identical.

The spelling of 238969687 in words is "two hundred thirty-eight million, nine hundred sixty-nine thousand, six hundred eighty-seven".