9863945 has 48 divisors (see below), whose sum is σ = 15704640. Its totient is φ = 5878656.

The previous prime is 9863939. The next prime is 9863947. The reversal of 9863945 is 5493689.

It is not a de Polignac number, because 9863945 - 2¹⁰ = 9862921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9863896 and 9863905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9863947) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60434 + ... + 60596.

It is an arithmetic number, because the mean of its divisors is an integer number (327180).

Almost surely, 2^9863945 is an apocalyptic number.

9863945 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9863945 is a deficient number, since it is larger than the sum of its proper divisors (5840695).

9863945 is a wasteful number, since it uses less digits than its factorization.

9863945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 207 counting only the distinct ones).

The product of its digits is 233280, while the sum is 44.

The square root of 9863945 is about 3140.6918027721. The cubic root of 9863945 is about 214.4619319790.

The spelling of 9863945 in words is "nine million, eight hundred sixty-three thousand, nine hundred forty-five".