889809149 has 4 divisors (see below), whose sum is σ = 904890720. Its totient is φ = 874727580.

The previous prime is 889809061. The next prime is 889809157. The reversal of 889809149 is 941908988.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 889809149 - 2²⁴ = 873031933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 889809094 and 889809103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889809199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7540697 + ... + 7540814.

It is an arithmetic number, because the mean of its divisors is an integer number (226222680).

Almost surely, 2^889809149 is an apocalyptic number.

It is an amenable number.

889809149 is a deficient number, since it is larger than the sum of its proper divisors (15081571).

889809149 is a wasteful number, since it uses less digits than its factorization.

889809149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15081570.

The product of its (nonzero) digits is 1492992, while the sum is 56.

The square root of 889809149 is about 29829.6689388267. The cubic root of 889809149 is about 961.8314102843.

The spelling of 889809149 in words is "eight hundred eighty-nine million, eight hundred nine thousand, one hundred forty-nine".