9873145 has 8 divisors (see below), whose sum is σ = 11970504. Its totient is φ = 7816704.

The previous prime is 9873133. The next prime is 9873151. The reversal of 9873145 is 5413789.

It can be written as a sum of positive squares in 4 ways, for example, as 1087849 + 8785296 = 1043^2 + 2964^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9873145 - 2⁵ = 9873113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9694 + ... + 10663.

It is an arithmetic number, because the mean of its divisors is an integer number (1496313).

Almost surely, 2^9873145 is an apocalyptic number.

It is an amenable number.

9873145 is a deficient number, since it is larger than the sum of its proper divisors (2097359).

9873145 is a wasteful number, since it uses less digits than its factorization.

9873145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20459.

The product of its digits is 30240, while the sum is 37.

The square root of 9873145 is about 3142.1561068795. The cubic root of 9873145 is about 214.5285867396.

The spelling of 9873145 in words is "nine million, eight hundred seventy-three thousand, one hundred forty-five".