8779993 has 2 divisors, whose sum is σ = 8779994. Its totient is φ = 8779992.

The previous prime is 8779961. The next prime is 8780017. The reversal of 8779993 is 3999778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6697744 + 2082249 = 2588^2 + 1443^2 .

It is a cyclic number.

It is not a de Polignac number, because 8779993 - 2⁵ = 8779961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8779993.

It is not a weakly prime, because it can be changed into another prime (8779933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4389996 + 4389997.

It is an arithmetic number, because the mean of its divisors is an integer number (4389997).

Almost surely, 2^8779993 is an apocalyptic number.

It is an amenable number.

8779993 is a deficient number, since it is larger than the sum of its proper divisors (1).

8779993 is an equidigital number, since it uses as much as digits as its factorization.

8779993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 52.

The square root of 8779993 is about 2963.1052968128. The cubic root of 8779993 is about 206.2994435486.

The spelling of 8779993 in words is "eight million, seven hundred seventy-nine thousand, nine hundred ninety-three".