845989089 has 16 divisors (see below), whose sum is σ = 1243220160. Its totient is φ = 507432960.

The previous prime is 845989057. The next prime is 845989091. The reversal of 845989089 is 980989548.

It is not a de Polignac number, because 845989089 - 2⁵ = 845989057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (845989099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128944 + ... + 135345.

It is an arithmetic number, because the mean of its divisors is an integer number (77701260).

Almost surely, 2^845989089 is an apocalyptic number.

It is an amenable number.

845989089 is a deficient number, since it is larger than the sum of its proper divisors (397231071).

845989089 is a wasteful number, since it uses less digits than its factorization.

845989089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264400.

The product of its (nonzero) digits is 7464960, while the sum is 60.

The square root of 845989089 is about 29085.8915799396. The cubic root of 845989089 is about 945.7759232949.

The spelling of 845989089 in words is "eight hundred forty-five million, nine hundred eighty-nine thousand, eighty-nine".