9889745 has 8 divisors (see below), whose sum is σ = 11947200. Its totient is φ = 7858800.

The previous prime is 9889741. The next prime is 9889753. The reversal of 9889745 is 5479889.

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

It is not a de Polignac number, because 9889745 - 2² = 9889741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9889693 and 9889702.

It is not an unprimeable number, because it can be changed into a prime (9889741) 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, 5795 + ... + 7304.

It is an arithmetic number, because the mean of its divisors is an integer number (1493400).

Almost surely, 2^9889745 is an apocalyptic number.

It is an amenable number.

9889745 is a deficient number, since it is larger than the sum of its proper divisors (2057455).

9889745 is a wasteful number, since it uses less digits than its factorization.

9889745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13255.

The product of its digits is 725760, while the sum is 50.

The square root of 9889745 is about 3144.7964958006. The cubic root of 9889745 is about 214.6487504283.

The spelling of 9889745 in words is "nine million, eight hundred eighty-nine thousand, seven hundred forty-five".