1393996399 has 2 divisors, whose sum is σ = 1393996400. Its totient is φ = 1393996398.

The previous prime is 1393996343. The next prime is 1393996411. The reversal of 1393996399 is 9936993931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1393996399 - 2¹³ = 1393988207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1393996309) 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 as a sum of consecutive naturals, namely, 696998199 + 696998200.

It is an arithmetic number, because the mean of its divisors is an integer number (696998200).

Almost surely, 2^1393996399 is an apocalyptic number.

1393996399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393996399 is an equidigital number, since it uses as much as digits as its factorization.

1393996399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9565938, while the sum is 61.

The square root of 1393996399 is about 37336.2611813234. The cubic root of 1393996399 is about 1117.0875646376.

The spelling of 1393996399 in words is "one billion, three hundred ninety-three million, nine hundred ninety-six thousand, three hundred ninety-nine".