1028088779 has 4 divisors (see below), whose sum is σ = 1030062600. Its totient is φ = 1026114960.

The previous prime is 1028088731. The next prime is 1028088781. The reversal of 1028088779 is 9778808201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1028088779 - 2¹² = 1028084683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028082779) 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, 986129 + ... + 987170.

It is an arithmetic number, because the mean of its divisors is an integer number (257515650).

Almost surely, 2^1028088779 is an apocalyptic number.

1028088779 is a deficient number, since it is larger than the sum of its proper divisors (1973821).

1028088779 is an equidigital number, since it uses as much as digits as its factorization.

1028088779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973820.

The product of its (nonzero) digits is 451584, while the sum is 50.

The square root of 1028088779 is about 32063.8235243397. The cubic root of 1028088779 is about 1009.2766048354.

The spelling of 1028088779 in words is "one billion, twenty-eight million, eighty-eight thousand, seven hundred seventy-nine".