238364789 has 4 divisors (see below), whose sum is σ = 256700556. Its totient is φ = 220029024.

The previous prime is 238364771. The next prime is 238364809. The reversal of 238364789 is 987463832.

238364789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20566225 + 217798564 = 4535^2 + 14758^2 .

It is a cyclic number.

It is not a de Polignac number, because 238364789 - 2¹² = 238360693 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 (238364729) 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, 9167864 + ... + 9167889.

It is an arithmetic number, because the mean of its divisors is an integer number (64175139).

Almost surely, 2^238364789 is an apocalyptic number.

It is an amenable number.

238364789 is a deficient number, since it is larger than the sum of its proper divisors (18335767).

238364789 is a wasteful number, since it uses less digits than its factorization.

238364789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18335766.

The product of its digits is 1741824, while the sum is 50.

The square root of 238364789 is about 15439.0669731043. The cubic root of 238364789 is about 620.0319000236.

The spelling of 238364789 in words is "two hundred thirty-eight million, three hundred sixty-four thousand, seven hundred eighty-nine".