9809745 has 16 divisors (see below), whose sum is σ = 17122752. Its totient is φ = 4756160.

The previous prime is 9809741. The next prime is 9809749. The reversal of 9809745 is 5479089.

It is an interprime number because it is at equal distance from previous prime (9809741) and next prime (9809749).

It is not a de Polignac number, because 9809745 - 2² = 9809741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9809697 and 9809706.

It is not an unprimeable number, because it can be changed into a prime (9809741) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 29562 + ... + 29891.

It is an arithmetic number, because the mean of its divisors is an integer number (1070172).

Almost surely, 2^9809745 is an apocalyptic number.

It is an amenable number.

9809745 is a deficient number, since it is larger than the sum of its proper divisors (7313007).

9809745 is a wasteful number, since it uses less digits than its factorization.

9809745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59472.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 9809745 is about 3132.0512447915. The cubic root of 9809745 is about 214.0684047779.

The spelling of 9809745 in words is "nine million, eight hundred nine thousand, seven hundred forty-five".