9959649 has 16 divisors (see below), whose sum is σ = 15667200. Its totient is φ = 5507280.

The previous prime is 9959641. The next prime is 9959659. The reversal of 9959649 is 9469599.

It is not a de Polignac number, because 9959649 - 2³ = 9959641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9959641) 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, 6999 + ... + 8300.

It is an arithmetic number, because the mean of its divisors is an integer number (979200).

Almost surely, 2^9959649 is an apocalyptic number.

It is an amenable number.

9959649 is a deficient number, since it is larger than the sum of its proper divisors (5707551).

9959649 is a wasteful number, since it uses less digits than its factorization.

9959649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15340.

The product of its digits is 787320, while the sum is 51.

The square root of 9959649 is about 3155.8911578190. The cubic root of 9959649 is about 215.1532997179.

The spelling of 9959649 in words is "nine million, nine hundred fifty-nine thousand, six hundred forty-nine".