788878117 has 4 divisors (see below), whose sum is σ = 788934316. Its totient is φ = 788821920.

The previous prime is 788878099. The next prime is 788878141. The reversal of 788878117 is 711878887.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 370716516 + 418161601 = 19254^2 + 20449^2 .

It is a cyclic number.

It is not a de Polignac number, because 788878117 - 2¹⁹ = 788353829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (788888117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12817 + ... + 41737.

It is an arithmetic number, because the mean of its divisors is an integer number (197233579).

Almost surely, 2^788878117 is an apocalyptic number.

It is an amenable number.

788878117 is a deficient number, since it is larger than the sum of its proper divisors (56199).

788878117 is a wasteful number, since it uses less digits than its factorization.

788878117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56198.

The product of its digits is 1404928, while the sum is 55.

The square root of 788878117 is about 28086.9741517309. The cubic root of 788878117 is about 923.9957416425.

The spelling of 788878117 in words is "seven hundred eighty-eight million, eight hundred seventy-eight thousand, one hundred seventeen".