1393216208 has 20 divisors (see below), whose sum is σ = 2700237888. Its totient is φ = 696380640.

The previous prime is 1393216207. The next prime is 1393216259. The reversal of 1393216208 is 8026123931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393216207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43385 + ... + 68327.

Almost surely, 2^1393216208 is an apocalyptic number.

It is an amenable number.

1393216208 is a deficient number, since it is larger than the sum of its proper divisors (1307021680).

1393216208 is a wasteful number, since it uses less digits than its factorization.

1393216208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28442 (or 28436 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 1393216208 is about 37325.8115517935. The cubic root of 1393216208 is about 1116.8791221313.

The spelling of 1393216208 in words is "one billion, three hundred ninety-three million, two hundred sixteen thousand, two hundred eight".