9959873 has 16 divisors (see below), whose sum is σ = 12531840. Its totient is φ = 7753680.

The previous prime is 9959869. The next prime is 9959879. The reversal of 9959873 is 3789599.

It is not a de Polignac number, because 9959873 - 2² = 9959869 is a prime.

It is a super-2 number, since 2×9959873² = 198398140352258, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9959879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8783 + ... + 9851.

It is an arithmetic number, because the mean of its divisors is an integer number (783240).

Almost surely, 2^9959873 is an apocalyptic number.

It is an amenable number.

9959873 is a deficient number, since it is larger than the sum of its proper divisors (2571967).

9959873 is a wasteful number, since it uses less digits than its factorization.

9959873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109 (or 1087 counting only the distinct ones).

The product of its digits is 612360, while the sum is 50.

The square root of 9959873 is about 3155.9266468028. The cubic root of 9959873 is about 215.1549126923.

The spelling of 9959873 in words is "nine million, nine hundred fifty-nine thousand, eight hundred seventy-three".