9969641 has 4 divisors (see below), whose sum is σ = 10875984. Its totient is φ = 9063300.

The previous prime is 9969637. The next prime is 9969653. The reversal of 9969641 is 1469699.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9969641 - 2² = 9969637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9969592 and 9969601.

It is not an unprimeable number, because it can be changed into a prime (9969611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453155 + ... + 453176.

It is an arithmetic number, because the mean of its divisors is an integer number (2718996).

Almost surely, 2^9969641 is an apocalyptic number.

It is an amenable number.

9969641 is a deficient number, since it is larger than the sum of its proper divisors (906343).

9969641 is a wasteful number, since it uses less digits than its factorization.

9969641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906342.

The product of its digits is 104976, while the sum is 44.

The square root of 9969641 is about 3157.4738320373. The cubic root of 9969641 is about 215.2252263905.

The spelling of 9969641 in words is "nine million, nine hundred sixty-nine thousand, six hundred forty-one".