938397842 has 6 divisors (see below), whose sum is σ = 1407661749. Its totient is φ = 469177260.

The previous prime is 938397829. The next prime is 938397851. The reversal of 938397842 is 248793839.

It can be written as a sum of positive squares in 2 ways, for example, as 904746241 + 33651601 = 30079^2 + 5801^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=21661.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 32492 + ... + 54152.

Almost surely, 2^938397842 is an apocalyptic number.

938397842 is a deficient number, since it is larger than the sum of its proper divisors (469263907).

938397842 is an frugal number, since it uses more digits than its factorization.

938397842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43324 (or 21663 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 53.

The square root of 938397842 is about 30633.2799745636. The cubic root of 938397842 is about 979.0292490574.

The spelling of 938397842 in words is "nine hundred thirty-eight million, three hundred ninety-seven thousand, eight hundred forty-two".