1283539 has 2 divisors, whose sum is σ = 1283540. Its totient is φ = 1283538.

The previous prime is 1283537. The next prime is 1283543. The reversal of 1283539 is 9353821.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9353821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1283539 - 2¹ = 1283537 is a prime.

Together with 1283537, it forms a pair of twin primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1283539.

It is not a weakly prime, because it can be changed into another prime (1283537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641769 + 641770.

It is an arithmetic number, because the mean of its divisors is an integer number (641770).

2^1283539 is an apocalyptic number.

1283539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283539 is an equidigital number, since it uses as much as digits as its factorization.

1283539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 31.

The square root of 1283539 is about 1132.9338021261. The cubic root of 1283539 is about 108.6766784575.

The spelling of 1283539 in words is "one million, two hundred eighty-three thousand, five hundred thirty-nine".