238749873 has 4 divisors (see below), whose sum is σ = 318333168. Its totient is φ = 159166580.

The previous prime is 238749871. The next prime is 238749881. The reversal of 238749873 is 378947832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 238749873 - 2¹ = 238749871 is a prime.

It is a super-2 number, since 2×238749873² = 114003003715032258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238749871) 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 3 ways as a sum of consecutive naturals, for example, 39791643 + ... + 39791648.

It is an arithmetic number, because the mean of its divisors is an integer number (79583292).

Almost surely, 2^238749873 is an apocalyptic number.

It is an amenable number.

238749873 is a deficient number, since it is larger than the sum of its proper divisors (79583295).

238749873 is an equidigital number, since it uses as much as digits as its factorization.

238749873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79583294.

The product of its digits is 2032128, while the sum is 51.

The square root of 238749873 is about 15451.5330307384. The cubic root of 238749873 is about 620.3656124872.

The spelling of 238749873 in words is "two hundred thirty-eight million, seven hundred forty-nine thousand, eight hundred seventy-three".