1369321 has 2 divisors, whose sum is σ = 1369322. Its totient is φ = 1369320.

The previous prime is 1369309. The next prime is 1369337. The reversal of 1369321 is 1239631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1254400 + 114921 = 1120^2 + 339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1369321 is a prime.

It is not a weakly prime, because it can be changed into another prime (1369391) 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, 684660 + 684661.

It is an arithmetic number, because the mean of its divisors is an integer number (684661).

2^1369321 is an apocalyptic number.

It is an amenable number.

1369321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1369321 is an equidigital number, since it uses as much as digits as its factorization.

1369321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 25.

The square root of 1369321 is about 1170.1799006990. The cubic root of 1369321 is about 111.0457025771.

The spelling of 1369321 in words is "one million, three hundred sixty-nine thousand, three hundred twenty-one".