1223686393 has 6 divisors (see below), whose sum is σ = 1291481034. Its totient is φ = 1159281504.

The previous prime is 1223686363. The next prime is 1223686397. The reversal of 1223686393 is 3936863221.

It can be written as a sum of positive squares in only one way, i.e., 1211596864 + 12089529 = 34808^2 + 3477^2 .

It is not a de Polignac number, because 1223686393 - 2¹³ = 1223678201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223686397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1694496 + ... + 1695217.

It is an arithmetic number, because the mean of its divisors is an integer number (215246839).

Almost surely, 2^1223686393 is an apocalyptic number.

It is an amenable number.

1223686393 is a deficient number, since it is larger than the sum of its proper divisors (67794641).

1223686393 is an equidigital number, since it uses as much as digits as its factorization.

1223686393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389751 (or 3389732 counting only the distinct ones).

The product of its digits is 279936, while the sum is 43.

The square root of 1223686393 is about 34981.2291522182. The cubic root of 1223686393 is about 1069.6048830829.

The spelling of 1223686393 in words is "one billion, two hundred twenty-three million, six hundred eighty-six thousand, three hundred ninety-three".