779898378 has 64 divisors (see below), whose sum is σ = 1811819520. Its totient is φ = 219203712.

The previous prime is 779898373. The next prime is 779898391. The reversal of 779898378 is 873898977.

779898378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (779898373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1425501 + ... + 1426047.

It is an arithmetic number, because the mean of its divisors is an integer number (28309680).

Almost surely, 2^779898378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 779898378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (905909760).

779898378 is an abundant number, since it is smaller than the sum of its proper divisors (1031921142).

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

779898378 is a wasteful number, since it uses less digits than its factorization.

779898378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051.

The product of its digits is 42674688, while the sum is 66.

The square root of 779898378 is about 27926.6607026332. The cubic root of 779898378 is about 920.4764301400.

The spelling of 779898378 in words is "seven hundred seventy-nine million, eight hundred ninety-eight thousand, three hundred seventy-eight".