238699381 has 4 divisors (see below), whose sum is σ = 238803264. Its totient is φ = 238595500.

The previous prime is 238699367. The next prime is 238699393. The reversal of 238699381 is 183996832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238699381 is a prime.

It is a super-2 number, since 2×238699381² = 113954788979566322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238699301) 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, 48415 + ... + 53116.

It is an arithmetic number, because the mean of its divisors is an integer number (59700816).

Almost surely, 2^238699381 is an apocalyptic number.

It is an amenable number.

238699381 is a deficient number, since it is larger than the sum of its proper divisors (103883).

238699381 is a wasteful number, since it uses less digits than its factorization.

238699381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103882.

The product of its digits is 559872, while the sum is 49.

The square root of 238699381 is about 15449.8990611589. The cubic root of 238699381 is about 620.3218767447.

The spelling of 238699381 in words is "two hundred thirty-eight million, six hundred ninety-nine thousand, three hundred eighty-one".