889717145 has 8 divisors (see below), whose sum is σ = 1067821704. Its totient is φ = 711666304.

The previous prime is 889717141. The next prime is 889717249. The reversal of 889717145 is 541717988.

It can be written as a sum of positive squares in 4 ways, for example, as 241709209 + 648007936 = 15547^2 + 25456^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 889717145 - 2² = 889717141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 889717093 and 889717102.

It is not an unprimeable number, because it can be changed into a prime (889717141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52007 + ... + 66963.

It is an arithmetic number, because the mean of its divisors is an integer number (133477713).

Almost surely, 2^889717145 is an apocalyptic number.

It is an amenable number.

889717145 is a deficient number, since it is larger than the sum of its proper divisors (178104559).

889717145 is a wasteful number, since it uses less digits than its factorization.

889717145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26859.

The product of its digits is 564480, while the sum is 50.

The square root of 889717145 is about 29828.1267430591. The cubic root of 889717145 is about 961.7982588356.

The spelling of 889717145 in words is "eight hundred eighty-nine million, seven hundred seventeen thousand, one hundred forty-five".