778934493 has 6 divisors (see below), whose sum is σ = 1125127614. Its totient is φ = 519289656.

The previous prime is 778934483. The next prime is 778934501. The reversal of 778934493 is 394439877.

778934493 is a `hidden beast` number, since 77 + 89 + 3 + 4 + 493 = 666.

It can be written as a sum of positive squares in only one way, i.e., 682933689 + 96000804 = 26133^2 + 9798^2 .

It is not a de Polignac number, because 778934493 - 2¹³ = 778926301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778934483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43274130 + ... + 43274147.

It is an arithmetic number, because the mean of its divisors is an integer number (187521269).

Almost surely, 2^778934493 is an apocalyptic number.

It is an amenable number.

778934493 is a deficient number, since it is larger than the sum of its proper divisors (346193121).

778934493 is a wasteful number, since it uses less digits than its factorization.

778934493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86548283 (or 86548280 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The square root of 778934493 is about 27909.3979333127. The cubic root of 778934493 is about 920.0970648218.

The spelling of 778934493 in words is "seven hundred seventy-eight million, nine hundred thirty-four thousand, four hundred ninety-three".