797779992 has 64 divisors (see below), whose sum is σ = 2024225280. Its totient is φ = 261983232.

The previous prime is 797779991. The next prime is 797780017. The reversal of 797779992 is 299977797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797779991) 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 in 15 ways as a sum of consecutive naturals, for example, 611613 + ... + 612915.

It is an arithmetic number, because the mean of its divisors is an integer number (31628520).

Almost surely, 2^797779992 is an apocalyptic number.

It is an amenable number.

797779992 is an abundant number, since it is smaller than the sum of its proper divisors (1226445288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

797779992 is a wasteful number, since it uses less digits than its factorization.

797779992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672 (or 1668 counting only the distinct ones).

The product of its digits is 31505922, while the sum is 66.

The square root of 797779992 is about 28244.9994158258. Note that the first 3 decimals coincide. The cubic root of 797779992 is about 927.4582741695.

The spelling of 797779992 in words is "seven hundred ninety-seven million, seven hundred seventy-nine thousand, nine hundred ninety-two".