39942000394 has 8 divisors (see below), whose sum is σ = 59944001220. Its totient is φ = 19960666656.

The previous prime is 39942000391. The next prime is 39942000401. The reversal of 39942000394 is 49300024993.

It can be written as a sum of positive squares in 2 ways, for example, as 39655544769 + 286455625 = 199137^2 + 16925^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 39942000394.

It is not an unprimeable number, because it can be changed into a prime (39942000391) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5161939 + ... + 5169670.

Almost surely, 2^39942000394 is an apocalyptic number.

39942000394 is a deficient number, since it is larger than the sum of its proper divisors (20002000826).

39942000394 is a wasteful number, since it uses less digits than its factorization.

39942000394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10333544.

The product of its (nonzero) digits is 209952, while the sum is 43.

The spelling of 39942000394 in words is "thirty-nine billion, nine hundred forty-two million, three hundred ninety-four", and thus it is an aban number.