1322779993 has 4 divisors (see below), whose sum is σ = 1322863360. Its totient is φ = 1322696628.

The previous prime is 1322779973. The next prime is 1322780051. The reversal of 1322779993 is 3999772231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1322779993 - 2⁵ = 1322779961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1322779993.

It is not an unprimeable number, because it can be changed into a prime (1322779963) 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, 9705 + ... + 52342.

It is an arithmetic number, because the mean of its divisors is an integer number (330715840).

Almost surely, 2^1322779993 is an apocalyptic number.

It is an amenable number.

1322779993 is a deficient number, since it is larger than the sum of its proper divisors (83367).

1322779993 is an equidigital number, since it uses as much as digits as its factorization.

1322779993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83366.

The product of its digits is 1285956, while the sum is 52.

The square root of 1322779993 is about 36370.0425212839. The cubic root of 1322779993 is about 1097.7308575646.

The spelling of 1322779993 in words is "one billion, three hundred twenty-two million, seven hundred seventy-nine thousand, nine hundred ninety-three".