775841994 has 12 divisors (see below), whose sum is σ = 1680991026. Its totient is φ = 258613992.

The previous prime is 775841993. The next prime is 775842013. The reversal of 775841994 is 499148577.

It can be written as a sum of positive squares in only one way, i.e., 766569969 + 9272025 = 27687^2 + 3045^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 775841994.

It is not an unprimeable number, because it can be changed into a prime (775841993) 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, 21551149 + ... + 21551184.

Almost surely, 2^775841994 is an apocalyptic number.

775841994 is an abundant number, since it is smaller than the sum of its proper divisors (905149032).

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

775841994 is a wasteful number, since it uses less digits than its factorization.

775841994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43102341 (or 43102338 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 775841994 is about 27853.9403675674. The cubic root of 775841994 is about 918.8778039063.

The spelling of 775841994 in words is "seven hundred seventy-five million, eight hundred forty-one thousand, nine hundred ninety-four".