238849951 has 4 divisors (see below), whose sum is σ = 241214904. Its totient is φ = 236485000.

The previous prime is 238849939. The next prime is 238849979. The reversal of 238849951 is 159948832.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238849951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 238849895 and 238849904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238849151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182325 + ... + 1182526.

It is an arithmetic number, because the mean of its divisors is an integer number (60303726).

Almost surely, 2^238849951 is an apocalyptic number.

238849951 is a deficient number, since it is larger than the sum of its proper divisors (2364953).

238849951 is a wasteful number, since it uses less digits than its factorization.

238849951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364952.

The product of its digits is 622080, while the sum is 49.

The square root of 238849951 is about 15454.7711403307. The cubic root of 238849951 is about 620.4522809829.

The spelling of 238849951 in words is "two hundred thirty-eight million, eight hundred forty-nine thousand, nine hundred fifty-one".