1283913 has 6 divisors (see below), whose sum is σ = 1854554. Its totient is φ = 855936.

The previous prime is 1283903. The next prime is 1283939. The reversal of 1283913 is 3193821.

It can be written as a sum of positive squares in only one way, i.e., 725904 + 558009 = 852^2 + 747^2 .

It is not a de Polignac number, because 1283913 - 2⁴ = 1283897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1283903) 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 in 5 ways as a sum of consecutive naturals, for example, 71320 + ... + 71337.

2^1283913 is an apocalyptic number.

It is an amenable number.

1283913 is a deficient number, since it is larger than the sum of its proper divisors (570641).

1283913 is a wasteful number, since it uses less digits than its factorization.

1283913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142663 (or 142660 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1283913 is about 1133.0988482917. The cubic root of 1283913 is about 108.6872329038.

The spelling of 1283913 in words is "one million, two hundred eighty-three thousand, nine hundred thirteen".