889520846509 has 4 divisors (see below), whose sum is σ = 941845602204. Its totient is φ = 837196090816.

The previous prime is 889520846497. The next prime is 889520846519. The reversal of 889520846509 is 905648025988.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 767735202025 + 121785644484 = 876205^2 + 348978^2 .

It is a cyclic number.

It is not a de Polignac number, because 889520846509 - 2¹⁹ = 889520322221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889520846519) 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, 26162377822 + ... + 26162377855.

It is an arithmetic number, because the mean of its divisors is an integer number (235461400551).

Almost surely, 2^889520846509 is an apocalyptic number.

It is an amenable number.

889520846509 is a deficient number, since it is larger than the sum of its proper divisors (52324755695).

889520846509 is a wasteful number, since it uses less digits than its factorization.

889520846509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52324755694.

The product of its (nonzero) digits is 49766400, while the sum is 64.

The spelling of 889520846509 in words is "eight hundred eighty-nine billion, five hundred twenty million, eight hundred forty-six thousand, five hundred nine".