838944242 has 4 divisors (see below), whose sum is σ = 1258416366. Its totient is φ = 419472120.

The previous prime is 838944133. The next prime is 838944247. The reversal of 838944242 is 242449838.

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., 659411041 + 179533201 = 25679^2 + 13399^2 .

It is a junction number, because it is equal to n+sod(n) for n = 838944193 and 838944202.

It is not an unprimeable number, because it can be changed into a prime (838944247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209736059 + ... + 209736062.

Almost surely, 2^838944242 is an apocalyptic number.

838944242 is a deficient number, since it is larger than the sum of its proper divisors (419472124).

838944242 is a wasteful number, since it uses less digits than its factorization.

838944242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419472123.

The product of its digits is 442368, while the sum is 44.

The square root of 838944242 is about 28964.5342099610. The cubic root of 838944242 is about 943.1433332609.

The spelling of 838944242 in words is "eight hundred thirty-eight million, nine hundred forty-four thousand, two hundred forty-two".