238389894 has 24 divisors (see below), whose sum is σ = 538969392. Its totient is φ = 76008240.

The previous prime is 238389869. The next prime is 238389959. The reversal of 238389894 is 498983832.

It is a happy number.

It is a super-2 number, since 2×238389894² = 113659483122662472, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 238389894.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 287497 + ... + 288324.

It is an arithmetic number, because the mean of its divisors is an integer number (22457058).

Almost surely, 2^238389894 is an apocalyptic number.

238389894 is an abundant number, since it is smaller than the sum of its proper divisors (300579498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238389894 is a wasteful number, since it uses less digits than its factorization.

238389894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575852 (or 575849 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 238389894 is about 15439.8799865802. The cubic root of 238389894 is about 620.0536668772.

The spelling of 238389894 in words is "two hundred thirty-eight million, three hundred eighty-nine thousand, eight hundred ninety-four".