1123783939 has 4 divisors (see below), whose sum is σ = 1129488624. Its totient is φ = 1118079256.

The previous prime is 1123783919. The next prime is 1123783949. The reversal of 1123783939 is 9393873211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9393873211 = 78041 ⋅120371.

It is a cyclic number.

It is not a de Polignac number, because 1123783939 - 2¹⁷ = 1123652867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123783919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2852047 + ... + 2852440.

It is an arithmetic number, because the mean of its divisors is an integer number (282372156).

Almost surely, 2^1123783939 is an apocalyptic number.

1123783939 is a deficient number, since it is larger than the sum of its proper divisors (5704685).

1123783939 is an equidigital number, since it uses as much as digits as its factorization.

1123783939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5704684.

The product of its digits is 244944, while the sum is 46.

The square root of 1123783939 is about 33522.8867939502. The cubic root of 1123783939 is about 1039.6670343734.

The spelling of 1123783939 in words is "one billion, one hundred twenty-three million, seven hundred eighty-three thousand, nine hundred thirty-nine".