1322039993 has 2 divisors, whose sum is σ = 1322039994. Its totient is φ = 1322039992.

The previous prime is 1322039947. The next prime is 1322040029. The reversal of 1322039993 is 3999302231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 775789609 + 546250384 = 27853^2 + 23372^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322039993 - 2⁸ = 1322039737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1322039993.

It is not a weakly prime, because it can be changed into another prime (1322059993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661019996 + 661019997.

It is an arithmetic number, because the mean of its divisors is an integer number (661019997).

Almost surely, 2^1322039993 is an apocalyptic number.

It is an amenable number.

1322039993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322039993 is an equidigital number, since it uses as much as digits as its factorization.

1322039993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 41.

The square root of 1322039993 is about 36359.8678902991. The cubic root of 1322039993 is about 1097.5261189675.

The spelling of 1322039993 in words is "one billion, three hundred twenty-two million, thirty-nine thousand, nine hundred ninety-three".