238981394 has 4 divisors (see below), whose sum is σ = 358472094. Its totient is φ = 119490696.

The previous prime is 238981349. The next prime is 238981403. The reversal of 238981394 is 493189832.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 134676025 + 104305369 = 11605^2 + 10213^2 .

It is a super-2 number, since 2×238981394² = 114224213356366472, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 59745347 + ... + 59745350.

Almost surely, 2^238981394 is an apocalyptic number.

238981394 is a deficient number, since it is larger than the sum of its proper divisors (119490700).

238981394 is a wasteful number, since it uses less digits than its factorization.

238981394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119490699.

The product of its digits is 373248, while the sum is 47.

The square root of 238981394 is about 15459.0230609829. The cubic root of 238981394 is about 620.5660750939.

The spelling of 238981394 in words is "two hundred thirty-eight million, nine hundred eighty-one thousand, three hundred ninety-four".