1393272289 has 2 divisors, whose sum is σ = 1393272290. Its totient is φ = 1393272288.

The previous prime is 1393272271. The next prime is 1393272313. The reversal of 1393272289 is 9822723931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1275918400 + 117353889 = 35720^2 + 10833^2 .

It is a cyclic number.

It is not a de Polignac number, because 1393272289 - 2⁹ = 1393271777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1393272589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696636144 + 696636145.

It is an arithmetic number, because the mean of its divisors is an integer number (696636145).

Almost surely, 2^1393272289 is an apocalyptic number.

It is an amenable number.

1393272289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393272289 is an equidigital number, since it uses as much as digits as its factorization.

1393272289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 1393272289 is about 37326.5627804115. The cubic root of 1393272289 is about 1116.8941078068.

The spelling of 1393272289 in words is "one billion, three hundred ninety-three million, two hundred seventy-two thousand, two hundred eighty-nine".