1223299993 has 2 divisors, whose sum is σ = 1223299994. Its totient is φ = 1223299992.

The previous prime is 1223299939. The next prime is 1223300027. The reversal of 1223299993 is 3999923221.

Together with previous prime (1223299939) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1112355904 + 110944089 = 33352^2 + 10533^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223299993 - 2²¹ = 1221202841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223299093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611649996 + 611649997.

It is an arithmetic number, because the mean of its divisors is an integer number (611649997).

Almost surely, 2^1223299993 is an apocalyptic number.

It is an amenable number.

1223299993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223299993 is an equidigital number, since it uses as much as digits as its factorization.

1223299993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 472392, while the sum is 49.

The square root of 1223299993 is about 34975.7057541374. The cubic root of 1223299993 is about 1069.4922891922.

It can be divided in two parts, 12232 and 99993, that added together give a square (112225 = 335²).

The spelling of 1223299993 in words is "one billion, two hundred twenty-three million, two hundred ninety-nine thousand, nine hundred ninety-three".