393104391 has 8 divisors (see below), whose sum is σ = 538305264. Its totient is φ = 254986560.

The previous prime is 393104389. The next prime is 393104417. The reversal of 393104391 is 193401393.

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

It is not a de Polignac number, because 393104391 - 2¹ = 393104389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393104321) 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, 1770630 + ... + 1770851.

It is an arithmetic number, because the mean of its divisors is an integer number (67288158).

Almost surely, 2^393104391 is an apocalyptic number.

393104391 is a deficient number, since it is larger than the sum of its proper divisors (145200873).

393104391 is a wasteful number, since it uses less digits than its factorization.

393104391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541521.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 393104391 is about 19826.8603414661. The cubic root of 393104391 is about 732.5477942155.

The spelling of 393104391 in words is "three hundred ninety-three million, one hundred four thousand, three hundred ninety-one".