1028769799 has 2 divisors, whose sum is σ = 1028769800. Its totient is φ = 1028769798.

The previous prime is 1028769767. The next prime is 1028769821. The reversal of 1028769799 is 9979678201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1028769799 - 2⁵ = 1028769767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028769199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514384899 + 514384900.

It is an arithmetic number, because the mean of its divisors is an integer number (514384900).

Almost surely, 2^1028769799 is an apocalyptic number.

1028769799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028769799 is an equidigital number, since it uses as much as digits as its factorization.

1028769799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 58.

The square root of 1028769799 is about 32074.4415228075. The cubic root of 1028769799 is about 1009.4994084999.

The spelling of 1028769799 in words is "one billion, twenty-eight million, seven hundred sixty-nine thousand, seven hundred ninety-nine".