194798889 has 6 divisors (see below), whose sum is σ = 281376186. Its totient is φ = 129865920.

The previous prime is 194798873. The next prime is 194798899. The reversal of 194798889 is 988897491.

194798889 is a `hidden beast` number, since 1 + 9 + 479 + 88 + 89 = 666.

194798889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 152769600 + 42029289 = 12360^2 + 6483^2 .

It is not a de Polignac number, because 194798889 - 2⁴ = 194798873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194798809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10822152 + ... + 10822169.

It is an arithmetic number, because the mean of its divisors is an integer number (46896031).

Almost surely, 2^194798889 is an apocalyptic number.

It is an amenable number.

194798889 is a deficient number, since it is larger than the sum of its proper divisors (86577297).

194798889 is a wasteful number, since it uses less digits than its factorization.

194798889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21644327 (or 21644324 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 63.

The square root of 194798889 is about 13957.0372572405. The cubic root of 194798889 is about 579.6895772488.

The spelling of 194798889 in words is "one hundred ninety-four million, seven hundred ninety-eight thousand, eight hundred eighty-nine".