238866447 has 16 divisors (see below), whose sum is σ = 324511488. Its totient is φ = 156259200.

The previous prime is 238866421. The next prime is 238866449. The reversal of 238866447 is 744668832.

238866447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 238866447 - 2¹⁴ = 238850063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238866396 and 238866405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238866449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34423 + ... + 40775.

It is an arithmetic number, because the mean of its divisors is an integer number (20281968).

Almost surely, 2^238866447 is an apocalyptic number.

238866447 is a deficient number, since it is larger than the sum of its proper divisors (85645041).

238866447 is a wasteful number, since it uses less digits than its factorization.

238866447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6590.

The product of its digits is 1548288, while the sum is 48.

The square root of 238866447 is about 15455.3048174405. The cubic root of 238866447 is about 620.4665643508.

The spelling of 238866447 in words is "two hundred thirty-eight million, eight hundred sixty-six thousand, four hundred forty-seven".