779985090 has 24 divisors (see below), whose sum is σ = 2027961468. Its totient is φ = 207996000.

The previous prime is 779985083. The next prime is 779985119. The reversal of 779985090 is 90589977.

779985090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 651321441 + 128663649 = 25521^2 + 11343^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4333161 + ... + 4333340.

Almost surely, 2^779985090 is an apocalyptic number.

779985090 is an abundant number, since it is smaller than the sum of its proper divisors (1247976378).

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

779985090 is a wasteful number, since it uses less digits than its factorization.

779985090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8666514 (or 8666511 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The square root of 779985090 is about 27928.2131544429. The cubic root of 779985090 is about 920.5105428725.

The spelling of 779985090 in words is "seven hundred seventy-nine million, nine hundred eighty-five thousand, ninety".