1397329 has 2 divisors, whose sum is σ = 1397330. Its totient is φ = 1397328.

The previous prime is 1397311. The next prime is 1397339. The reversal of 1397329 is 9237931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1327104 + 70225 = 1152^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 1397329 - 2⁹ = 1396817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1397294 and 1397303.

It is not a weakly prime, because it can be changed into another prime (1397339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698664 + 698665.

It is an arithmetic number, because the mean of its divisors is an integer number (698665).

2^1397329 is an apocalyptic number.

It is an amenable number.

1397329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397329 is an equidigital number, since it uses as much as digits as its factorization.

1397329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 34.

The square root of 1397329 is about 1182.0867142473. The cubic root of 1397329 is about 111.7977056268.

The spelling of 1397329 in words is "one million, three hundred ninety-seven thousand, three hundred twenty-nine".