1223783 has 4 divisors (see below), whose sum is σ = 1335048. Its totient is φ = 1112520.

The previous prime is 1223777. The next prime is 1223857. The reversal of 1223783 is 3873221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3873221 = 11 ⋅352111.

It is a cyclic number.

It is not a de Polignac number, because 1223783 - 2⁴ = 1223767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223723) 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 3 ways as a sum of consecutive naturals, for example, 55616 + ... + 55637.

It is an arithmetic number, because the mean of its divisors is an integer number (333762).

2^1223783 is an apocalyptic number.

1223783 is a deficient number, since it is larger than the sum of its proper divisors (111265).

1223783 is a wasteful number, since it uses less digits than its factorization.

1223783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111264.

The product of its digits is 2016, while the sum is 26.

The square root of 1223783 is about 1106.2472598836. The cubic root of 1223783 is about 106.9633029891.

The spelling of 1223783 in words is "one million, two hundred twenty-three thousand, seven hundred eighty-three".