787898988 has 30 divisors (see below), whose sum is σ = 2059724436. Its totient is φ = 262632888.

The previous prime is 787898987. The next prime is 787899041. The reversal of 787898988 is 889898787.

It is not an unprimeable number, because it can be changed into a prime (787898987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1215570 + ... + 1216217.

Almost surely, 2^787898988 is an apocalyptic number.

It is an amenable number.

787898988 is an abundant number, since it is smaller than the sum of its proper divisors (1271825448).

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

787898988 is a wasteful number, since it uses less digits than its factorization.

787898988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431803 (or 2431792 counting only the distinct ones).

The product of its digits is 130056192, while the sum is 72.

The square root of 787898988 is about 28069.5384358204. The cubic root of 787898988 is about 923.6133058922.

The spelling of 787898988 in words is "seven hundred eighty-seven million, eight hundred ninety-eight thousand, nine hundred eighty-eight".