789998881 has 8 divisors (see below), whose sum is σ = 923852864. Its totient is φ = 661394160.

The previous prime is 789998863. The next prime is 789998899. The reversal of 789998881 is 188899987.

789998881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (789998863) and next prime (789998899).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 789998881 - 2⁹ = 789998369 is a prime.

It is a super-2 number, since 2×789998881² = 1248196463962504322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (789998081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1311990 + ... + 1312591.

It is an arithmetic number, because the mean of its divisors is an integer number (115481608).

Almost surely, 2^789998881 is an apocalyptic number.

It is an amenable number.

789998881 is a deficient number, since it is larger than the sum of its proper divisors (133853983).

789998881 is a wasteful number, since it uses less digits than its factorization.

789998881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624631.

The product of its digits is 20901888, while the sum is 67.

The square root of 789998881 is about 28106.9187389867. The cubic root of 789998881 is about 924.4331100644.

The spelling of 789998881 in words is "seven hundred eighty-nine million, nine hundred ninety-eight thousand, eight hundred eighty-one".