1283903 has 2 divisors, whose sum is σ = 1283904. Its totient is φ = 1283902.

The previous prime is 1283897. The next prime is 1283939. The reversal of 1283903 is 3093821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1283903 - 2⁶ = 1283839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1283983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641951 + 641952.

It is an arithmetic number, because the mean of its divisors is an integer number (641952).

2^1283903 is an apocalyptic number.

1283903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283903 is an equidigital number, since it uses as much as digits as its factorization.

1283903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1283903 is about 1133.0944356054. The cubic root of 1283903 is about 108.6869507260.

The spelling of 1283903 in words is "one million, two hundred eighty-three thousand, nine hundred three".