1283389 has 2 divisors, whose sum is σ = 1283390. Its totient is φ = 1283388.

The previous prime is 1283383. The next prime is 1283417. The reversal of 1283389 is 9833821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1119364 + 164025 = 1058^2 + 405^2 .

It is an emirp because it is prime and its reverse (9833821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1283389 - 2⁹ = 1282877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1283383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641694 + 641695.

It is an arithmetic number, because the mean of its divisors is an integer number (641695).

2^1283389 is an apocalyptic number.

It is an amenable number.

1283389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283389 is an equidigital number, since it uses as much as digits as its factorization.

1283389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 1283389 is about 1132.8676003841. The cubic root of 1283389 is about 108.6724448147.

The spelling of 1283389 in words is "one million, two hundred eighty-three thousand, three hundred eighty-nine".