869767993 has 2 divisors, whose sum is σ = 869767994. Its totient is φ = 869767992.

The previous prime is 869767967. The next prime is 869768017. The reversal of 869767993 is 399767968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 456377769 + 413390224 = 21363^2 + 20332^2 .

It is a cyclic number.

It is not a de Polignac number, because 869767993 - 2¹³ = 869759801 is a prime.

It is not a weakly prime, because it can be changed into another prime (869767903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434883996 + 434883997.

It is an arithmetic number, because the mean of its divisors is an integer number (434883997).

Almost surely, 2^869767993 is an apocalyptic number.

It is an amenable number.

869767993 is a deficient number, since it is larger than the sum of its proper divisors (1).

869767993 is an equidigital number, since it uses as much as digits as its factorization.

869767993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30862944, while the sum is 64.

The square root of 869767993 is about 29491.8292582878. The cubic root of 869767993 is about 954.5554039183. Note that the first 3 decimals are identical.

The spelling of 869767993 in words is "eight hundred sixty-nine million, seven hundred sixty-seven thousand, nine hundred ninety-three".