238979842 has 8 divisors (see below), whose sum is σ = 360669456. Its totient is φ = 118756692.

The previous prime is 238979833. The next prime is 238979849. The reversal of 238979842 is 248979832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×238979842² = 114222729764689928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 238979842.

It is not an unprimeable number, because it can be changed into a prime (238979849) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 366208 + ... + 366859.

It is an arithmetic number, because the mean of its divisors is an integer number (45083682).

Almost surely, 2^238979842 is an apocalyptic number.

238979842 is a deficient number, since it is larger than the sum of its proper divisors (121689614).

238979842 is a wasteful number, since it uses less digits than its factorization.

238979842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733232.

The product of its digits is 1741824, while the sum is 52.

The square root of 238979842 is about 15458.9728636802. The cubic root of 238979842 is about 620.5647317249.

The spelling of 238979842 in words is "two hundred thirty-eight million, nine hundred seventy-nine thousand, eight hundred forty-two".