9898745 has 4 divisors (see below), whose sum is σ = 11878500.
Its totient is φ = 7918992.
The previous prime is 9898723. The next prime is 9898769. The reversal of 9898745 is 5478989.
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 7862416 + 2036329 = 2804^2 + 1427^2
It is a cyclic number.
It is not a de Polignac number, because 9898745 - 222 = 5704441 is a prime.
It is an alternating number because its digits alternate between odd and even.
It is a junction number, because it is equal to n+sod(n) for n = 9898693 and 9898702.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989870 + ... + 989879.
It is an arithmetic number, because the mean of its divisors is an integer number (2969625).
Almost surely, 29898745 is an apocalyptic number.
It is an amenable number.
9898745 is a deficient number, since it is larger than the sum of its proper divisors (1979755).
9898745 is a wasteful number, since it uses less digits than its factorization.
9898745 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1979754.
The product of its digits is 725760, while the sum is 50.
The square root of 9898745 is about 3146.2271055981.
The cubic root of 9898745 is about 214.7138432100.
The spelling of 9898745 in words is "nine million, eight hundred ninety-eight thousand, seven hundred forty-five".