393839741 has 8 divisors (see below), whose sum is σ = 411198144. Its totient is φ = 376500960.

The previous prime is 393839713. The next prime is 393839753. The reversal of 393839741 is 147938393.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-393839741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393839701) 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 7 ways as a sum of consecutive naturals, for example, 48710 + ... + 56216.

It is an arithmetic number, because the mean of its divisors is an integer number (51399768).

Almost surely, 2^393839741 is an apocalyptic number.

It is an amenable number.

393839741 is a deficient number, since it is larger than the sum of its proper divisors (17358403).

393839741 is a wasteful number, since it uses less digits than its factorization.

393839741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9811.

The product of its digits is 489888, while the sum is 47.

The square root of 393839741 is about 19845.3959648076. The cubic root of 393839741 is about 733.0042832068.

The spelling of 393839741 in words is "three hundred ninety-three million, eight hundred thirty-nine thousand, seven hundred forty-one".