1283939 has 2 divisors, whose sum is σ = 1283940. Its totient is φ = 1283938.

The previous prime is 1283903. The next prime is 1283941. The reversal of 1283939 is 9393821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1283939 - 2⁸ = 1283683 is a prime.

It is a Sophie Germain prime.

Together with 1283941, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1283899 and 1283908.

It is not a weakly prime, because it can be changed into another prime (1283969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641969 + 641970.

It is an arithmetic number, because the mean of its divisors is an integer number (641970).

2^1283939 is an apocalyptic number.

1283939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283939 is an equidigital number, since it uses as much as digits as its factorization.

1283939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 1283939 is about 1133.1103211956. The cubic root of 1283939 is about 108.6879665592.

It can be divided in two parts, 1283 and 939, that added together give a palindrome (2222).

The spelling of 1283939 in words is "one million, two hundred eighty-three thousand, nine hundred thirty-nine".