393897241 has 8 divisors (see below), whose sum is σ = 413748864. Its totient is φ = 374272800.

The previous prime is 393897223. The next prime is 393897289. The reversal of 393897241 is 142798393.

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

It is a cyclic number.

It is not a de Polignac number, because 393897241 - 2⁹ = 393896729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 393897191 and 393897200.

It is not an unprimeable number, because it can be changed into a prime (393897541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53236 + ... + 60181.

It is an arithmetic number, because the mean of its divisors is an integer number (51718608).

Almost surely, 2^393897241 is an apocalyptic number.

It is an amenable number.

393897241 is a deficient number, since it is larger than the sum of its proper divisors (19851623).

393897241 is a wasteful number, since it uses less digits than its factorization.

393897241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113591.

The product of its digits is 326592, while the sum is 46.

The square root of 393897241 is about 19846.8446106680. The cubic root of 393897241 is about 733.0399539724.

The spelling of 393897241 in words is "three hundred ninety-three million, eight hundred ninety-seven thousand, two hundred forty-one".