393392449 has 8 divisors (see below), whose sum is σ = 406328832. Its totient is φ = 380471520.

The previous prime is 393392411. The next prime is 393392501. The reversal of 393392449 is 944293393.

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-393392449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 393392399 and 393392408.

It is not an unprimeable number, because it can be changed into a prime (393392249) 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, 71532 + ... + 76834.

It is an arithmetic number, because the mean of its divisors is an integer number (50791104).

Almost surely, 2^393392449 is an apocalyptic number.

It is an amenable number.

393392449 is a deficient number, since it is larger than the sum of its proper divisors (12936383).

393392449 is a wasteful number, since it uses less digits than its factorization.

393392449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7727.

The product of its digits is 629856, while the sum is 46.

The square root of 393392449 is about 19834.1233484114. The cubic root of 393392449 is about 732.7266820086.

The spelling of 393392449 in words is "three hundred ninety-three million, three hundred ninety-two thousand, four hundred forty-nine".