788021985 has 16 divisors (see below), whose sum is σ = 1270463040. Its totient is φ = 417069120.

The previous prime is 788021977. The next prime is 788021987. The reversal of 788021985 is 589120887.

788021985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 788021985 - 2³ = 788021977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (788021987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198550 + ... + 202479.

It is an arithmetic number, because the mean of its divisors is an integer number (79403940).

Almost surely, 2^788021985 is an apocalyptic number.

It is an amenable number.

788021985 is a deficient number, since it is larger than the sum of its proper divisors (482441055).

788021985 is a wasteful number, since it uses less digits than its factorization.

788021985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401168.

The product of its (nonzero) digits is 322560, while the sum is 48.

The square root of 788021985 is about 28071.7292841036. The cubic root of 788021985 is about 923.6613644025.

The spelling of 788021985 in words is "seven hundred eighty-eight million, twenty-one thousand, nine hundred eighty-five".