845002389 has 16 divisors (see below), whose sum is σ = 1404679680. Its totient is φ = 438962160.

The previous prime is 845002387. The next prime is 845002399. The reversal of 845002389 is 983200548.

It is a happy number.

It is not a de Polignac number, because 845002389 - 2¹ = 845002387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845002381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1828779 + ... + 1829240.

It is an arithmetic number, because the mean of its divisors is an integer number (87792480).

Almost surely, 2^845002389 is an apocalyptic number.

It is an amenable number.

845002389 is a deficient number, since it is larger than the sum of its proper divisors (559677291).

845002389 is a wasteful number, since it uses less digits than its factorization.

845002389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3658040.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 845002389 is about 29068.9247995174. The cubic root of 845002389 is about 945.4080855551.

The spelling of 845002389 in words is "eight hundred forty-five million, two thousand, three hundred eighty-nine".