789991455 has 24 divisors (see below), whose sum is σ = 1389343536. Its totient is φ = 383025280.

The previous prime is 789991421. The next prime is 789991469. The reversal of 789991455 is 554199987.

789991455 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 789991455 - 2⁸ = 789991199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 789991395 and 789991404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215814 + ... + 219443.

It is an arithmetic number, because the mean of its divisors is an integer number (57889314).

Almost surely, 2^789991455 is an apocalyptic number.

789991455 is a deficient number, since it is larger than the sum of its proper divisors (599352081).

789991455 is a wasteful number, since it uses less digits than its factorization.

789991455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435287 (or 435276 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 57.

The square root of 789991455 is about 28106.7866359710. The cubic root of 789991455 is about 924.4302134941.

The spelling of 789991455 in words is "seven hundred eighty-nine million, nine hundred ninety-one thousand, four hundred fifty-five".