9883945 has 4 divisors (see below), whose sum is σ = 11860740. Its totient is φ = 7907152.

The previous prime is 9883943. The next prime is 9883949. The reversal of 9883945 is 5493889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5493889 = 257 ⋅21377.

It can be written as a sum of positive squares in 2 ways, for example, as 6390784 + 3493161 = 2528^2 + 1869^2 .

It is a cyclic number.

It is not a de Polignac number, because 9883945 - 2¹ = 9883943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9883895 and 9883904.

It is not an unprimeable number, because it can be changed into a prime (9883943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988390 + ... + 988399.

It is an arithmetic number, because the mean of its divisors is an integer number (2965185).

Almost surely, 2^9883945 is an apocalyptic number.

It is an amenable number.

9883945 is a deficient number, since it is larger than the sum of its proper divisors (1976795).

9883945 is a wasteful number, since it uses less digits than its factorization.

9883945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976794.

The product of its digits is 311040, while the sum is 46.

The square root of 9883945 is about 3143.8742023179. The cubic root of 9883945 is about 214.6067808188.

The spelling of 9883945 in words is "nine million, eight hundred eighty-three thousand, nine hundred forty-five".