1077997799 has 4 divisors (see below), whose sum is σ = 1079629320. Its totient is φ = 1076366280.

The previous prime is 1077997783. The next prime is 1077997801. The reversal of 1077997799 is 9977997701.

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 1077997799 - 2⁴ = 1077997783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1077997709) 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, 814769 + ... + 816090.

It is an arithmetic number, because the mean of its divisors is an integer number (269907330).

Almost surely, 2^1077997799 is an apocalyptic number.

1077997799 is a deficient number, since it is larger than the sum of its proper divisors (1631521).

1077997799 is an equidigital number, since it uses as much as digits as its factorization.

1077997799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631520.

The product of its (nonzero) digits is 15752961, while the sum is 65.

The square root of 1077997799 is about 32832.8768005486. The cubic root of 1077997799 is about 1025.3511544018.

The spelling of 1077997799 in words is "one billion, seventy-seven million, nine hundred ninety-seven thousand, seven hundred ninety-nine".