1393304897 has 2 divisors, whose sum is σ = 1393304898. Its totient is φ = 1393304896.

The previous prime is 1393304873. The next prime is 1393304947. The reversal of 1393304897 is 7984033931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1239321616 + 153983281 = 35204^2 + 12409^2 .

It is a cyclic number.

It is not a de Polignac number, because 1393304897 - 2¹⁶ = 1393239361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1393304807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696652448 + 696652449.

It is an arithmetic number, because the mean of its divisors is an integer number (696652449).

Almost surely, 2^1393304897 is an apocalyptic number.

It is an amenable number.

1393304897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393304897 is an equidigital number, since it uses as much as digits as its factorization.

1393304897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 1393304897 is about 37326.9995713559. Note that the first 3 decimals coincide. The cubic root of 1393304897 is about 1116.9028209634.

The spelling of 1393304897 in words is "one billion, three hundred ninety-three million, three hundred four thousand, eight hundred ninety-seven".